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Mendelian Genetics / Inheritance Patterns

Total questions: 82

Worksheet time: 2hrs 56mins

Name
Class
Date
1.
Two traits are blended or create a "new" trait
a)
complete dominance
b)
incomplete dominance
c)
codominance
2.
A man with crooked teeth marries a woman with straight teeth. Most of the their children have straight teeth.
a)
complete dominance
b)
incomplete dominance
c)
codominance
3.
A straight horn unicorn mates with a spiral horn unicorn. Their offspring has a zigzag horn.
a)
complete dominance
b)
incomplete dominance
c)
codominance
4.
A red eye dragon mates with a yellow eye dragon. Their offspring has yellow eyes.
a)
complete dominance
b)
incomplete dominance
c)
codominance
5.
How many alleles does an individual have for each trait?
a)
1
b)
2
c)
3
d)
4
6.
A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?
a)
Incomplete Dominance
b)
Co dominance
c)
Independent assortment
d)
Recessive inheritance
7.
How are Incomplete Dominance and Co Dominance different than a normal Mendelian cross?
a)
There is no difference
b)
The heterozygous genotype has a unique phenotype
c)
There is no heterozygous genotype
d)
There is only one phenotype regardless of genotype.
8.
A breed of chicken shows codominance for feather color. One allele codes for black feathers, another codes for white feathers. The feathers of heterozygous chickens of this breed will be:
a)
all black
b)
all white
c)
all gray
d)
speckled black and white
9.
What does heterozygous mean?
a)
An organism that has the same genes for a trait (TT or tt)
b)
An organism that has different genes for a trait (Tt)
c)
When neither gene is fully dominant; offspring is a mixture of both
d)
the different forms of a trait (hair color--> brown, blonde, red
10.
An allele whose trait only shows up when no dominant allele is present.
a)
hidden allele
b)
dominant allele
c)
recessive allele
d)
present allele
11.
Hemophilia is a x-linked disorder.  A woman is a carrier for the disorder.  Which is the correct genotype?
a)
Hh
b)
XHXh
c)
hh
d)
XhXh
12.
Which of the following is a hybrid?
a)
BB
b)
bb
c)
Bb
13.
Which of the following is purebred?
a)
AA
b)
aa
c)
Aa
d)
Both AA and aa
14.
The physical characteristics of an organism.  (What you can see.)
a)
Genotype 
b)
Phenotype
15.
BB 
a)
Genotype
b)
Phenotype
16.
How many alleles (letters) does a child get from each parent for each trait?
a)
1
b)
2
c)
3
d)
4
17.
Which choice best represents the genotype of this cross?
a)
1 Yy: 2 yy: 0 YY
b)
2 Yy: 2 yy: 0 YY
c)
3 Yy: 1 yy: 0 YY
d)
1 Yy: 3 yy: 0 YY
18.
What is the phenotype of the offspring? (A-Brown hair; a-blond hair) 
a)
50 % Brown Hair and 50% Blond Hair 
b)
25 % Brown Hair and 75% Blond Hair 
c)
75 % Brown Hair and 25% Blond Hair 
d)
0% Brown Hair and 100% Blond Hair 
19.
If a gene is found only on the X chromosome and not the Y chromosome, it is said to be what?
a)
sex-linked trait
b)
polygenic trait
c)
codominant trait
d)
incomplete dominance trait
20.
What is NOT a possible genotype for someone with type B blood?
a)
BB
b)
AB
c)
BO
21.
What is the genotype of a person with type A blood, who had a father with type O blood?
a)
AB
b)
AO
c)
AA
d)
OO
22.
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
23.
A personal with type AB blood has which genotype?
a)
type A
b)
AA
c)
AB
d)
BB
24.
What is the phenotype of a person with the genotype AO?
a)
type A
b)
type O
c)
AA
d)
OO
25.
An organism's appearance or other detectable characteristic is a what?
a)
phenotype
b)
gene
c)
allele
d)
genetic variation
26.
What pattern of inheritance is shown in this image?
a)
Codominance
b)
Incomplete dominance
c)
Polygenic traits
27.
What type of inheritance is determined by multiple genes located on different chromosomes and there can be a range of possible traits? Ex:  Eye Color
a)
Codominance
b)
Incomplete dominance
c)
Polygenic traits
28.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
c)
Multiple Alleles
d)
Sex Linked Inheritance
29.
This is an example of____________.
a)
incomplete dominance
b)
codominance
c)
multiple alleles
d)
sex linked inheritance
30.
Which type of inheritance is this?
a)
co-dominance
b)
incomplete dominance
c)
multiple alleles
d)
sex linked inheritance
31.
How many phenotypes are there in ABO blood types?
a)
3
b)
4
c)
6
d)
12
32.
T = tall and t = short
TT and Tt would result in  the following phenotype
a)
short
b)
tall
c)
both tall and short
d)
neither tall or short
33.
Two heterozygous (Tt) tall pea plants are crossed. Which describes their offspring?
a)
50% tall and 50% short
b)
75%tall and 25% short
c)
100%short
34.
What is the passing of traits from parents to offspring known as?
a)
Heredity
b)
Genetics
c)
Punnett Square
35.
The scientific study of heredity is ____.
a)
Genetics
b)
Punnett squares
c)
Inheritance
d)
Biology
36.
Which law states that organisms inherit 2 copies of each gene and donate one to their offspring
a)
law of independent assortment
b)
law of segregation
c)
law of genetic linkage
d)
law of inheritance
37.
In the second generation-how many people have the disease or display the physical trait?
a)
2
b)
4
c)
5
d)
6
38.
In the second generation-how many people are carriers of the trait?
a)
2
b)
3
c)
5
d)
6
39.
How many kids did the mother and father from the first generation have?
a)
2
b)
4
c)
5
d)
6
40.
This type of inheritance pattern is a MIXTURE of both traits.
a)
incomplete dominance
b)
codominance
c)
complete dominance
d)
recessive pattern
41.
What genotype is missing from this Punnett Square?
a)
RrYy
b)
RRYY
c)
rryy
d)
RrYY
42.
What is the genotype for a pea plant heterozygous for round seeds (R), and homozygous recessive for green seeds (y)?
a)
Ry
b)
RRyy
c)
RrYy
d)
Rryy
43.
What are the possible genotypes for this cross?
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
44.

Which inheritance pattern produces offspring that have only 2 possible phenotypes (when looking at the inheritance of only one gene)?

a)

Codominance

b)

incomplete dominance

c)

Dominant / Recessive Inheritance Pattern

45.

In a hybrid (heterozygote), there is a BLEND of the two alleles and a new phenotype is produced. What type of dominance is this?

a)

Incomplete dominance

b)

Dominant / Recessive Inheritance Pattern

c)

Codominance

46.

A curly haired man married a straight haired woman. All of their children have wavy hair. What type of dominance does this show?

a)

Codominance

b)

Incomplete dominance

c)

Dominant / Recessive Inheritance Pattern

47.
A different version of a gene (variant), such a gene that codes for blue eyes versus a gene that codes for green eyes is known as  __________________.
a)
a trait
b)
a loci
c)
an allele 
d)
a chromosome
48.

Hemophilia is a sex-linked, recessive trait. Which of the following describes the probability of hemophilia in the offspring of a man who does not have hemophilia and a woman whose father is a hemophiliac?

a)

Each of their sons will have hemophilia.

b)

None of their daughters will have hemophilia.

c)

Their sons have a 25% chance of having hemophilia.

d)

There is a 50% chance that their daughters will have hemophilia.

49.

Alleles for the A and B blood cell antigens are codominant. The condition where no antigens are present on the blood cells (type O blood) is a recessive trait. Which set of parents can most likely produce a child with type O blood?

a)

one parent with type AB blood, and the other parent with type A blood

b)

one parent with type AB blood and the other parent with type O blood

c)

one parent with heterozygous type A blood, and the other parent with type O blood

d)

one parent with homozygous type A blood, and the other parent with homozygous type B blood

50.

This diagram shows a diploid cell with two pairs of homologous chromosomes.


Due to independent assortment, what is the possible genetic make-up of gametes produced by this organism?

a)

SsTt

b)

Ss, Tt

c)

S, s, T, t

d)

ST, St, sT, st

51.

Chickens can have different types of feathers. Frizzled feathers curl toward a chicken’s head. Assume that feather type is determined by a single gene and that the allele for frizzled feathers is dominant over the allele for straight feathers. In a cross between two chickens with straight feathers, what percentage of the offspring can be expected to have frizzled feathers?

a)

0%

b)

25%

c)

50%

d)

100%

52.
What type of inheritance is determined by multiple genes located at different loci on different chromosomes and there can be a range of traits?
a)
Codominance
b)
Incomplete dominance
c)
Polygenic traits
53.
Duchenne muscular dystrophy is a recessive x-linked disorder.
According to the Punnett square, what percentage of male offspring will have the disorder?
a)
0%
b)
25%
c)
50%
d)
100%
54.
This pedigree shows the inheritance of colorblindness.
What is the genotype for individual IV-1?
a)
XBXB
b)
XbXb
c)
XBY
d)
XbY
55.
Examine the pedigree. The allele for the presence of a widow’s peak is dominant. Therefore, we can tell from the chart that in the couple labeled 2:
a)
the male is heterozygous and the female is homozygous.
b)
the male is homozygous and the female is heterozygous.
c)
the male is homozygous and the female is homozygous.
d)
the male is heterozygous and the female is heterozygous.
56.
Cross Two Homozygous plants
(RRYY x rryy)
R = round seeds, r  = wrinkled seeds Y = yellow seeds, y = green seeds
What percent will have Round and Yellow seeds? 
a)
0%
b)
25%
c)
50%
d)
100%
57.
What genotype is missing from this Punnett Square?
a)
RrYy
b)
RRYY
c)
rryy
d)
RrYY
58.
Based off this punnett square, what fraction of the offspring will have wrinkled, yellow seeds?
a)
9/16
b)
3/16
c)
1/16
d)
16/16
59.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
60.

A white mouse with red eyes is crossed with a black mouse with brown eyes. The white mouse is recessive for both of its traits. The black mouse is dominant for both of its traits.

This cross would be

a)

BBEE x bbee

b)

BBEe x BbEe

c)

BbEE x BbEe

d)

BBee x BBEE

61.
Which is the correct phenotype for this organism?
a)
BB
b)
blue
c)
green
d)
bb
62.
The Law of Segregation states that alleles separate during the process of ...
a)
Mitosis
b)
Meiosis
c)
Fertilization
d)
Replication
63.
What is the sex of this baby?
a)
Male
b)
Female
64.
Based on the Karyotype shown, at which chromosome pair can we identify a genetic disorder? 
a)
Chromosome pair 5
b)
sex chromosomes
c)
Chromosome pair 21
d)
There are no chromosomal disorders
65.
a)
This karyotype shows Trisomy 21
b)
This karyotype has no abnormality
c)
This karyotype is missing a sex chromosome
d)
This karyotype is from a gamete
66.

What mutation am I ?

a)

Trisomy

b)

Chromsome

c)

Monosomy

d)

Polyploidy

67.

Is this a male or female?

a)

Female

b)

Male

68.

What mutation am I ?

a)

Mitosis

b)

Meiosis

c)

Non-disjunction

d)

Translocation

69.

What mutation am I ?

a)

Trisomy

b)

Monosomy

c)

Translocation

d)

Female

70.
karyotype depicts
a)
Turner's
b)
Edward's
c)
klinefelter's  
d)
Down's Syndrome 
71.
True or False.  Pictured above is a pedigree, a tool geneticists use to trace the inheritance of traits through generations. 
a)
True
b)
False
72.
True or False.  Some genetic disorders are caused by changes in the DNA of genes, but some are caused by changes in the structure or number of chromosomes.
a)
True
b)
False
73.
True or False.  With the genetic disorder known as Down Syndrome, a person's cells have an extra copy of chromosome 21. 
a)
True
b)
False
74.

What can cause birth defects?

a)

Environmental factors

b)

Genetic factors

c)

Food choices

d)

Standing near smokers

75.
X linked recessive traits affect mostly
a)
males
b)
females
c)
both equally
d)
none of the above
76.

If one of your parents has Huntington's, what is your chance of inheriting it?

a)

0%

b)

25%

c)

50%

d)

75%

e)

100%

77.
Mutated DNA sequences that can be passed from parent to offspring --
a)
occur in somatic cells (body cells)
b)
occur in gametic cells (sex cells)
c)
are rejected by meiosis
d)
only occur if the parent is exposed to harmful substances
78.

Bone growth disorder that causes a type of "short limb" dwarfism.

a)

Achondroplasia

b)

Color-blindness

c)

Cystic fibrosis

d)

Huntington's disease

e)

Phenylketonuria

79.

During anaphase I or II, sometimes the chromatids do not separate correctly. This results in a problem known as:

a)

disjunction

b)

nonjunction

c)

nondisjunction

d)

conjunction junction

80.

The first 22 chromosomes are known as

a)

Gametes

b)

Autobots

c)

Sex Chromosomes

d)

Autosomes

81.

The 23rd set of chromosomes are known as

a)

Gametes

b)

Autobots

c)

Sex Chromosomes

d)

Autosomes

82.

Disorders associated with the X/Y Chromosomes are commonly called:

a)

X-linked

b)

Sex-linked

c)

X/Y Disorders

d)

X Disorders

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