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Unit 5: Heredity

Total questions: 158

Worksheet time: 3hrs 28mins

Name
Class
Date
1.

In which genotype would the recessive allele be expressed.

a)

AA

b)

aa

c)

Aa

d)

XY

2.

Two heterozygous brown gerbils are crossed. If brown is dominant to white, what are the expected phenotypic results?

a)

25% Brown 75% White.

b)

50% Brown 50% White

c)

100% Brown

d)

75% Brown 25% White

3.

Which allele/gene will always be expressed if present?

a)

Sex Linked Genes

b)

Dominant alleles

c)

Recessive alleles

d)

Mutated Genes

4.

Which Law states that the dominant gene, if present, will be expressed as the phenotype?

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

d)

Law of Gravity

5.

In this Punnett Square A represents the dominant gene for almond shaped eyes and a represents the recessive gene for round eyes. A homozygous dominant and a homozygous recessive are crossed. What percent of the offspring will have round eyes.

a)

100%

b)

75%

c)

50%

d)

0%

6.

If man with almond eyes is crossed with a woman with round eyes (remember almond eyes are dominant). They have 10 children, 5 have almond eyes and 5 have round eyes. What must be the genotypes of the parents to create this phenotypic ratio?

a)

AAXaa

b)

AaXaa

c)

AAXAa

d)

AaXAa

7.

If two heterozygous parents are crossed what would the genotypic ratio of the offspring be?

a)

100% Bb

b)

50%BB 50%Bb

c)

25%BB 50%Bb 25% bb

d)

50% Bb 50% bb

8.

Which genotypes are homozygous?

a)

AA

b)

bb

c)

Tt

d)

ss

9.

Which genotypes are heterozygous

a)

BB

b)

AA

c)

Ee

d)

tt

10.

For a female to have a recessive sex-linked trait like hemophilia she must have what?

a)

Two dominant alleles

b)

Two recessive alleles

c)

One recessive allele

d)

a Y chromosome

11.

Why males inherit recessive sex-linked traits more often than females?

a)

The female cannot inherit recessive traits.

b)

The male always inherits the recessive trait.

c)

The female must inherit 2 recessive genes for it to be expressed, where a male only has to inherit 1 recessive gene.

d)

The female must inherit recessive gene for it to be expressed, where a male only has to inherit 2 recessive genes.

12.

Fur color in labs occur in a continuous range because it is affected by the interaction of multiple genes, making it a(n)

a)

codominant trait

b)

autosomal trait

c)

sex-linked trait

d)

polygenic trait

13.

Blond hair and blue eyes are commonly inherited together. Which of the following patterns of inheritance explains this?

a)

Linked Genes

b)

Sex-linked

c)

Multiple Alleles

d)

Codominance

14.

Which pair of genes in the diagram to the right would most likely be inherited together?

a)

A and C

b)

D and E

c)

A and B

d)

C and D

15.

In a cross between two parents who both have type AB blood type, what is the only blood type their offspring could NOT have

a)

A

b)

B

c)

AB

d)

O

16.

A cross between a purebred animal with red hairs and a purebred animal with white hairs produces all animals with BOTH red and white hairs is what type of inheritance pattern?

a)

Incomplete Dominance

b)

Codominance

c)

Polygenic

d)

Sex-Linked

17.

A cross between individuals of a species of tropical fish, all of the male offspring have long tail fins, and none of the females possess the trait is what type of inheritance pattern?

a)

Incomplete Dominance

b)

Codominance

c)

Polygenic

d)

Sex-Linked

18.

A cross between a white horse and a chestnut (dark brown) horse produces all light brown horses is what type of inheritance pattern?

a)

Incomplete Dominance

b)

Codominance

c)

Polygenic

d)

Sex-Linked

19.

A cross between a tall sunflower and a short sunflower results in sunflowers with a range in heights is what type of inheritance pattern?

a)

Incomplete Dominance

b)

Codominance

c)

Polygenic

d)

Sex-Linked

20.

If a man who is NOT color blind marries a woman who IS colorblind what probability will there be of having a colorblind son?

a)

100%

b)

25%

c)

50%

d)

75%

21.

Mutations can be caused by

a)

Radiation, global warming, and viruses

b)

Chemicals, viruses, and exercise

c)

Radiation, chemicals, and viruses

d)

Global warming, chemicals, and snow

22.

The only way a mutation can be passed on to offspring is

a)

the mutation must occur in the body cells

b)

the mutation must occur repeatedly

c)

the mutation must occur in the father only

d)

the mutation must occur in the gametes

23.

A gene mutation is

a)

when the entire chromosome is absent

b)

when only the nucleotide sequence for a single protein is changed.

c)

when a chromosome is missing sequences

d)

when nonhomologous chromosomes trade sections of DNA

24.

Which disorder is an example of nondisjunction?

a)

Klinefelter's Syndrome (XXY)

b)

Huntington's Disease

c)

Achondroplasia

d)

Hemophilia

25.

Nondisjunction of chromosome 21 results in which disorder?

a)

Turner's syndrome

b)

Sickle-cell anemia

c)

Klinefelter's syndrome

d)

Down syndrome

26.

Substances that are known to cause mutations in the sequence of DNA are called

a)

Carcinogens

b)

Mutagens

c)

Microgens

d)

Cancergens

27.

What type of inheritance is displayed?

a)

Autosomal dominant

b)

Autosomal reccessive

c)

Sex-linked

d)

Autosomal linked

28.

What is the genotype of the first individual in generation II?

a)

Rr

b)

rr

c)

Rt

d)

Tr

29.

What is the genotype of the grandmother (oldest female) in this family?

a)

Rr

b)

rr

c)

Rt

d)

Tr

30.

Cells used to replace other cells or tissue

a)

Gene therapy

b)

Stem cells

c)

Cloning

d)

Selective breeding

e)

Hybridization

31.

To breed two different species

a)

Gene therapy

b)

Stem cells

c)

Cloning

d)

Selective breeding

e)

Hybridization

32.

To breed organisms for a desired trait

a)

Gene therapy

b)

Stem cells

c)

Cloning

d)

Selective breeding

e)

Hybridization

33.
Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.
a)
23, 46
b)
46, 23
c)
2, 4
d)
50, 100
34.
What kind of cells are made in MEIOSIS?
a)
Haploid Gametes
b)
Diploid Somatic Cells
c)
Skin Cells
d)
Liver Cells
35.
The chromosomes that pair up during meiosis, are called __________ chromosomes.  
a)
homozygous 
b)
asexual
c)
homologous
d)
genes
36.
When homologous chromosomes match up, they form a structure call a ___________.
a)
tetrad
b)
triad
c)
diploid
d)
gamete
37.
A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?
a)
20
b)
40
c)
80
d)
160
38.
If a stem cell has 24 chromosomes, how many will it have at the end of meiosis?
a)
24
b)
12
c)
6
d)
the number varies per species
39.
The purpose of meiosis is to form ________ cells.
a)
body
b)
sex
c)
somatic
d)
brain
40.
Crossing over helps promote 
a)
male genotype
b)
genetic variation
c)
DNA replication
d)
mitosis
41.
During meiosis I, what happens? 
a)
Sister chromatids are split
b)
Homologous chromosomes are split
c)
Four cells are created
d)
None of the other choices are correct
42.
Crossing over is important because....
a)
It prevents mutations from entering the gametes. 
b)
It allows for even distribution of chromosomes in the gametes.
c)
It allows for more genetic diversity of gametes.
d)
It allows for genetic uniformity of gametes. 
43.
A haploid cell has 
a)
one-half of a set of chromosomes
b)
one set of chromosomes
c)
two sets of chromosomes
d)
four sets of chromosomes
44.
Which of the following best describes meiosis?
a)
It is carried out in all tissues theat require cell replacement
b)
It occurs only in cells in the reproductive structures of an organism
c)
It happens in all of the tissues except the brain and spinal cord
d)
It is the first stage of mitosis
45.
How many cells are created during Telophase II?
a)
1
b)
2
c)
3
d)
4
46.
Meiosis results in ______.
a)
4 genetically distinct haploid gametes
b)
2 genetically distinct cells
c)
2 genetically identical cells
d)
4 genetically identical cells
47.
Diploid Cells are represented by
a)
2n
b)
n
c)
4n
d)
1/2 n
48.
The process of crossing over occurs in what phase of meiosis?
a)
anaphase 1
b)
prophase 1
c)
prophase 2
d)
telophase 1
49.

Which of the following statements about homologous chromosomes is correct?

a)

They are found in animal cells but not in plant cells.

b)

They have genes from the same traits at the same loci.

c)

They pair up in prophase II.

d)

They are found in haploid cells.

e)

They are found in the cells of human females, but not in human males.

50.

Which of the following is a function of mitosis in humans?

a)

production of eggs

b)

production of sperm

c)

decreasing the number of chromosomes

d)

multiplication of body cells

e)

increasing genetic variability

51.

Which of the following will only show if two alleles are present?

a)

a dominant trait

b)

heterozygous

c)

a recessive trait

d)

hybrid

52.
Which of the following shows the correct sequence of the cell cycle?
a)
Mitosis-> G1->S->G2->cytokinesis
b)
S->G1-> G2-> mitosis-> cytokinesis
c)
cytokinesis->mitosis->G1->S->G2
d)
 G1->S->G2->mitosis->cytokinesis
53.
sequence
a)
C,D, B, A, F, E
b)
D,A,F,C,E,B
c)
B,E,C,F,A,D
d)
C,B,D,A E,F
54.
Structure (b) is a ____.
a)
chromosome
b)
chromatid
c)
centromere
55.
Which of the following phrases best describes cytokenesis
a)
division of the cytoplasm
b)
division of the nucleus
c)
division of DNA
d)
division of surface area
56.
The different forms of a gene are known as _____________.
a)
Codons
b)
Proteins
c)
Alleles
d)
Nucleotides
57.
How many alleles do you get from each parent?
a)
1
b)
2
c)
23
d)
46
58.

You cross a purple-flowered plant with a white-flowered plant. What must be true?

a)

The purple parent was heterozygous

b)

The purple parent was homozygous

c)

The purple trait is dominant

d)

The purple trait is recessive

59.
Which of the following is an example of a GENOTYPE?
a)
25%
b)
Blue
c)
1:2:1
d)
Bb
60.
Which of Mendel's laws states that alleles are separated during meiosis?
a)
Law of Dominance
b)
Law of Segregation
c)
Law of Independent Assortment
d)
Law of Meiosis
61.
Which of the following is an example of a PHENOTYPE?
a)
25%
b)
Blue
c)
1:2:1
d)
Bb
62.
What is another name for heterozygous?
a)
Hybrid
b)
Purebred
c)
Codominant
d)
Mixed Breed
63.

Australian Shepherds are a breed of dogs whose coat color is directly impacted by two different genes. The gene that determines basic coat color exhibits a dominant allele (B) for black coat color and a recessive allele (b) for red coat color. Additionally, these dogs can have a solid coat color (mm) or a mixed pattern coat color called merle (Mm). The homozygous dominant coat color is called a lethal white (MM) which produces pups that are deaf and blind. What is the probability that two red Australian shepherds will produce a black pup?

a)

0

b)

1/4

c)

1/2

d)

3/4

64.

Australian shepherd dogs can have a solid coat color (mm) or a mixed pattern coat color called merle (Mm). The homozygous dominant coat color is called a lethal white (MM) which produces pups that are deaf and blind. The Australian Shepherds of America Club discourages from mating two merles. Which of the following best explains why merle-to-merle matings are undesirable?

a)

The cross has the probability of producing litters with 50% solid coat color pups.

b)

The cross produces all homozygous recessive pups

c)

The cross has the probability of producing litters with 25% merle coat pups.

d)

The cross has a 25% chance of producing homozygous dominant pups.

65.
In horses, the grey coat color (G) is dominant to non-grey coat color (g). Additionally, some horses have a genetic disorder called hyperkalemic periodic paralysis or HYPP. HYPP is an inherited autosomal dominant disorder that affects the sodium channels in muscle cells. HYPP (H) is dominant to the normal condition (h). If a non-grey, normal stallion sires a foal that is not grey and does not have HYPP, which of the following genotypes are possible genotypes for the mother?
a)
GGhh and ggHH
b)
ggHH and GgHh
c)
GGHH and GGHh
d)
GgHh and gghh
66.
Hemophilia is a sex-linked recessive disorder.  If a hemophiliac male mates with a normal female, how many of their sons will be hemophiliac?
a)
0
b)
1/4
c)
1/2
d)
3/4
67.
Hemophilia is a sex-linked recessive disorder.  If a hemophiliac male mates with a normal female, how many of their daughters will be carriers?
a)
0
b)
25 %
c)
50 %
d)
100 %
68.
What percentage of the offspring are homozygous recessive when you cross two heterozygotes for a trait? 
a)
25%
b)
50%
c)
75%
d)
100%
69.
A tall plant (TT) is crossed with a short plant (SS) and a medium plant (TS) results. This is what type of inheritance pattern?
a)
Incomplete Dominance
b)
Codominance
70.
This is an example of ___________.
a)
Incomplete Dominance
b)
Codominance
71.
What are the blood types of the possible children that a woman (type O) and man (type AB) can have?
a)
O and AB
b)
O and A
c)
O and B
d)
A and B
72.
When there are multiple genes that affect a trait.
a)
Polygenic Traits
b)
Epistasis
c)
X-Chromosome Inactivation
d)
X-linked traits (same as sex-linked)
73.
In a sex-linked inheritance pedigree you would expect to see
a)
more affected females
b)
all carrier males
c)
more affected males
d)
an equal number of affected males and females
74.

One true-breeding line of mice is obese and dark and another is lean and light. Dark is dominant to light, but obese and lean exhibit incomplete dominance. What proportion of offspring from a dihybrid cross should be dark and obese?

a)

1/16

b)

3/16

c)

1/4

d)

3/8

75.

In the ABO blood type system,

a)

A, B, and O are codominant.

b)

A, B, and O are incompletely dominant.

c)

A and B are codominant.

d)

O is incompletely dominant to A and B.

76.

A woman has blood type AB. From this, we can infer that

a)

her mother was also blood type AB.

b)

her father was also blood type AB.

c)

her mother was type A, and her father was type B.

d)

neither of her parents was type O.

77.

A man has blood type O. From this, we can infer that

a)

at least one of his parents must be type O.

b)

his daughters must be type O.

c)

his sons must be type O.

d)

none of his children can be type AB.

78.

People with the _______ blood type are particularly valued as blood donors.

a)

A

b)

B

c)

AB

d)

O

79.

Different versions of the same gene

a)

Gene

b)

Allele

c)

Homologous Chromosome

d)

Heterozygous Chromosome

80.

The matching chromosomes from our mom and dad

a)

Gene

b)

Allele

c)

Homologous Chromosome

d)

Heterozygous Chromosome

81.
The science of heredity
a)
Genetics
b)
Heredity
c)
DNA
d)
Biology
82.
Who is the Father of Genetics
a)
Einstein
b)
Mendel
c)
Freud
d)
Darwin
83.
Where do you get your characteristics?
a)
You just do
b)
From each parent
c)
From just you Mother
d)
From just your Father
84.
Humans have ______ chromosomes
a)
48
b)
26
c)
46
d)
43
85.
How many daughter cells are produced from Meiosis
a)
2
b)
3
c)
4
d)
1
86.
Cycle that produces gametes (sex cells)
a)
Mitosis
b)
Meiosis
c)
Prophase
d)
Metaphase
87.
What did the Father of Genetics work with?
a)
Onion Roots
b)
Breeding Mice
c)
Breeding Rabbits
d)
Pea Plants
88.
An alternative form that a single gene may have for a particular trait (a T or t for example)
a)
Dominant
b)
Recessive
c)
Genes
d)
Allele
89.
A specific trait that appeared in the F1 generation~ trait that can cover another trait
a)
Gene
b)
Genotype
c)
Dominant
d)
Recessive
90.
A specific trait hidden or masked in the F1 generation~ a trait that is covered up
a)
Gene
b)
Allele
c)
Dominant
d)
Recessive
91.
An organism with two of the SAME alleles for a specific trait
a)
Homozygous
b)
Heterozygous
c)
Allele
d)
Genetics
92.
TT (example)
a)
Homozygous Recessive
b)
Homozygous Dominant
c)
Heterozygous
d)
Allele
93.
tt (example)
a)
Homozygous Dominant
b)
Homozygous Recessive
c)
Heterozygous
d)
Hybrids
94.
An organism with two DIFFERENT alleles for a specific trait
a)
Homozygous
b)
Heterozygous
c)
Genetics
d)
Alleles
95.
Tt (example)
a)
Homozygous Dominant
b)
Homozygous Recessive
c)
Heterozygous
d)
Genetics
96.
An organisms allele pair (TT, Tt, tt)
a)
Genotype
b)
Phenotype
c)
Alleles
d)
Carrier
97.
Observable characteristic that is expressed as a result of an allele pair
a)
Genotype
b)
Phenotype
c)
Hybrid
d)
Carrier
98.

A cross between two organisms looking at one trait

a)

Dihybrid Cross

b)

Single Cross

c)

Monohybrid Cross

d)

Multiple Cross

99.

Used when finding the possible genotypes for offspring when considering two traits at the same time

a)

Dihybrid Cross

b)

Single Cross

c)

Monohybrid Cross

d)

Multiple Cross

100.

Two heterozygous purple-flowering pea plants are crossed. If purple is dominant over white, what are the expected  phenotypic results

a)

100% purple

b)

75% purple, 25% white

c)

50% purple, 50% white

d)

25% purple, 75% white

101.

What law BEST explains why an organism with ‘Tt’ will show only the dominant phenotype

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

d)

Chromosome Theory of Inheritance

102.

Which Mendelian law of inheritance states that organisms inherit two copies of each gene and donate one copy to  each of their offspring

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

d)

Chromosome Theory of Inheritance

103.

Two heterozygous parents. Each has a dominant allele (B) for brown eyes and a recessive allele (b) for blue eyes. What would the genotypic ratio of the offspring be

a)

100% Bb

b)

50% BB, 50% Bb

c)

25% BB, 50% Bb, 25% bb

d)

50% Bb, 50% bb 

104.

Genes for different traits assort independently during the formation of gametes

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

d)

Law of Chromosome Inheritance

105.
A complex inheritance pattern in which the heterozygous phenotype is intermediate between those of the two homozygous parent organisms~ blends the two
a)
Incomplete Dominance
b)
Codominance
c)
Pedigree
d)
Autosomes
106.
A complex inheritance pattern that occurs when neither allele is dominant and both alleles are expressed
a)
Incomplete Dominance
b)
Codominance
c)
Pedigree
d)
Punnett Square
107.

Having more than two alleles for one gene

a)

Multiple Alleles

b)

Codominance

c)

Polydenic Inheritance

d)

Sex-Linked Trait

108.
X or Y chromosomes (determine gender)
a)
Sex Linked Traits
b)
Sex Chromosomes
c)
Autosomes
d)
Alleles
109.
The chromosomes that are not a sex chromosome
a)
Sex Chromosomes
b)
Autosomes
c)
DNA
d)
Genetics
110.

A trait produced by two or more genes

a)

Multiple Alleles

b)

Codominance

c)

Polygenic Inheritance

d)

Sex-Linked Trait

111.

Someone who carries the recessive trait, but doesn’t show it due to having a dominant X to mask it

a)
Hybrid
b)
Carrier
c)
Pedigree
d)
Codominance
112.

A cross between a tall sunflower and a short sunflower results in sunflowers with a range in heights

a)

Sex-Linked

b)

Codominance

c)

Incomplete Dominance

d)

Polygenic

113.

On a pedigree, how would a female individual with a disease be notated

a)

As a shaded circle

b)

As an unshaded circle

c)

As an unshaded square

d)

As a shaded square

114.

What kind of mutation occurred in the sex chromosome of an individual with the genotype XXY

a)

Nucleotide deletion

b)

Translocation

c)

Nucleotide insertion

d)

Nondisjunction

115.

A chart that displays family relationships indicating traits or disorders

a)

Punnett square

b)

Pedigree

c)

Karyotype chart

116.
How many generations are shown in this pedigree?
a)
1
b)
2
c)
3
d)
4
117.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
118.
This pedigree represents the inheritance of hemophilia in this family. How many of the females have the hemophilia trait?
a)
8
b)
5
c)
2
d)
3
119.
What do half colored symbols represent?
a)
The individual is a carrier (heterozygous).
b)
The individual expresses the trait.
c)
The individual has both recessive alleles.
d)
The individual has both dominant alleles.
120.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
121.
How many people in this whole pedigree have the trait/disease?
a)
2
b)
3
c)
4
d)
6
122.
How many females are in this pedigree?
a)
3
b)
4
c)
6
d)
7
123.

In this pedigree, which gender can be carriers of colorblindness and not have it?

a)

Just males

b)

Just females

c)

Both genders

124.
Give the genotype for person II-1, for this autosomal trait.
a)
GG
b)
Gg
c)
gg
d)
we cannot be 100% sure of the genotype
125.
If this pedigree shows an autosomal recessive disorder, what MUST the genotype of individual II-3 be?
a)
HH
b)
Hh
c)
hh
d)
None of the above
126.

Objective #13

This is a pedigree that follows blue eyes which is a recessive trait. What is the genotype of the father (square) in generation 1?

a)

Aa

b)

AA

c)

aa

d)

A?

127.

In this pedigree, the shading represents people in the family with dark hair while the unshaded represents blondes. Is dark hair controlled by a dominant or recessive allele?

a)

Dominant

b)

Recessive

128.

Individuals that are shaded in have premature hair whitening. Is this trait dominant or recessive? How do you know?

a)

Dominant because it skips generations

b)

Dominant because it is present in every generation

c)

Recessive because it skips generations

d)

Recessive because it is present in every generation.

129.

If the χ2 critical value = 5.99 and the

χ2 calculated value = 7.35, what is the conclusion

a)

Reject Ho, accept H1

b)

Accept Ho, reject H1

c)

there is not enough info to decide

d)

The conclusion can only be made if we also know the p-value

130.

What is the null hypothesis?

a)

Injury type is independent of position played

b)

Injury type is dependent on the position played independent

c)

Injury type is correlated to position played.

131.

What is the expected value of a female who likes Pepsi?

a)

10.5

b)

11

c)

14.5

d)

6.3

132.

What is the

χ2 calculated value for the following situation.

a)

6.65

b)

6.66

c)

0.00991

d)

1

133.

If the χ2 critical value = 5.99 and the

χ2 calculated value = 7.35, what is the conclusion

a)

Reject Ho, accept H1

b)

Accept Ho, reject H1

c)

there is not enough info to decide

d)

The conclusion can only be made if we also know the p-value

134.

What is the null hypothesis?

a)

Injury type is independent of position played

b)

Injury type is dependent on the position played independent

c)

Injury type is correlated to position played.

135.

What are the degrees of freedom for the following χ² test?

a)

6

b)

2

c)

5

d)

12

136.

If we are testing at a 5% significance level and our p-value is 0.00453, what is the conclusion?

a)

Accept Ho

b)

Reject Ho

c)

We need to know chi-squared

d)

You cannot do this problem without a calculator

137.

Testing at a 5% significance level, what are the correct rejection inequalities. (check all that apply)

a)

if Xcalc2>5.99 then reject Hoif\ X_{calc}^2>5.99\ then\ reject\ Ho

b)

if Xcalc2<5.99 then reject Hoif\ X_{calc}^2<5.99\ then\ reject\ Ho

c)

if p < 0.05, then reject Ho

d)

if p>0.05, then reject Ho

138.

Find the chi-squared calculated value for the table.

a)

0.486170447

b)

1.442392006

c)

1.45

d)

2

139.

Given that a student is male, what is the probability that maths is their favorite?

a)

0.491

b)

0.225

c)

0.443

d)

.508

140.

Chi-squared tests are invalid if:

a)

The calculated number is really large

b)

One of the expected values is less than 5

c)

One of the observed values is less than 5

d)

The calculated numbers is really small

141.

For a p-value from the calculator of 1.32355E-3 what would the conclusion be if testing at 10% significance level?

a)

Accept Ho

b)

Reject H1

c)

Reject Ho

d)

Need to know the chi-squared number

142.

Who is this?

a)

FDR

b)

Herman Munster

c)

Mitch McConnell

d)

JFK

e)

Dr. Phil Abucket

143.
What is it called when a sperm and egg meet?
a)
meiosis
b)
fertilization
c)
cell division
d)
mitosis
144.
Which process and type of resulting cells are represented?
a)
mitosis, gametes
b)
mitosis, body cells
c)
meiosis, gametes
d)
meiosis, body cells
145.
The chromosomes that pair up during meiosis, are called __________ chromosomes.  
a)
homozygous 
b)
asexual
c)
homologous
d)
genes
146.
A male shark has 40 chromosomes in each of its sex cells. How many would be present in its body cells?
a)
20
b)
40
c)
80
d)
160
147.
Which letter(s) in the diagram correspond to cells that are haploid? 
a)
A
b)
B
c)
C
d)
A and B
148.
Compared to the number of chromosomes contained in a body cell, how many chromosomes would normally be contained in a gamete?
a)
The same number
b)
One-fourth as many
c)
Twice as many
d)
Half as many
149.
What causes genetic variation in meiosis?
a)
chromosomes lining up
b)
crossing over of chromosomes
c)
separation of chromosomes
d)
chromosomes pulling apart
150.
What is one of the advantages, why is it better to reproduce sexually versus asexually?
a)
survival of the fittest
b)
overproduction
c)
genetic variation
d)
cloning
151.
Crossing over helps promote 
a)
male genotype
b)
genetic variation
c)
DNA replication
d)
mitosis
152.
Chromosomes exchange genetic material during 
a)
crossing over
b)
replication
c)
synthesis
d)
translation
153.
A human zygote should have _____ chromosomes inside.
a)
46
b)
23
c)
92
d)
64
154.
What do experts say is the most common form of Down Syndrome?
a)
Trisomy 47
b)
Trisomy 46
c)
Trisomy 21
d)
Trisomy 23
155.
Females have ____ and males have _____ chromosomes.
a)
XX, XY
b)
XY, XX
c)
XX, XX
d)
XY, XY
156.
A human being has a somatic cell that has 46 chromosomes.  What is the haploid number found in a gamete?
a)
23
b)
46
c)
69
d)
92
157.
What is this?
a)
Trisomy 13
b)
Monosomy 21
c)
47, XXY
d)
Trisomy 21
158.
Diploid Cells are represented by
a)
2n
b)
n
c)
4n
d)
1/2 n

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