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Unit 5 Biology Practice

Total questions: 80

Worksheet time: 1hrs 20mins

Name
Class
Date
1.

How many rounds of division in meiosis?

a)

0

b)

1

c)

2

d)

3

2.

What phase does the crossing over take place?

a)

Prophase I

b)

Prophase II

c)

Metaphase I

d)

Metaphase II

3.

If parent cell is 2N, what is the ploidy of the daughter cell?

a)

0N

b)

1N

c)

2N

d)

3N

4.

When does DNA replication occur for meiosis?

a)

Before meiosis during interphase

b)

During prophase when the cell is preparing

c)

During metaphase when chromosomes are in the middle

d)

During telophase when the nuclear envelope is forming

5.

What phase of interphase does DNA replication occur?

a)

G1

b)

G2

c)

S

d)

It doesn’t occur in interphase

6.

Compare and contrast number of DNA replications between mitosis & meiosis

a)

Mitosis – 0, Meiosis – 1

b)

Mitosis – 1, Meiosis – 1

c)

Mitosis – 1, Meiosis – 2

d)

Mitosis – 1, Meiosis – 0

7.

Compare and contrast number of divisions between mitosis & meiosis

a)

Mitosis – 0, Meiosis – 1

b)

Mitosis – 1, Meiosis – 1

c)

Mitosis – 1, Meiosis – 2

d)

Mitosis – 1, Meiosis – 0

8.

Describe the daughter cells in meiosis vs parent cell

The daughter cells are…

a)

Identical & Diploid

b)

Unique & Diploid

c)

Identical & Haploid

d)

Unique & Haploid

9.

What goes through movements in Meiosis I?

a)

Homologous chromosomes

b)

Sister chromatids

10.

What goes through movements in Meiosis II?

a)

Homologous chromosomes

b)

Sister chromatids

11.

Name this phase of Meiosis

a)

Anaphase II

b)

Anaphase I

c)

Metaphase I

d)

Metaphase II

12.

The phase of Meiosis in which tetrads are formed:

a)

Prophase I

b)

Metaphase I

c)

Anaphase I

d)

Telophase I

13.

The phase of Meiosis in which 4 daughter cells are formed:

a)

Telophase I

b)

Prophase II

c)

Anaphase II

d)

Telophase II

14.

Nuclear membranes form; the cell separates into two cells

a)

Interphase

b)

Telophase I & Cytokinesis

c)

Prophase II

d)

Metaphase I

15.

What is genetic recombination?

a)

The combination of genes produced by crossing over and independent assortment.

b)

When genes located close to each other on the same chromosome tend to travel together during meiosis.

c)

A map that shows the sequence of genes on a chromosome.

d)

The occurrence of one or more extra sets of chromosomes.

16.

Why is genetic recombination a good thing?

a)

Gives us new genes

b)

is lethal in humans

c)

increases genetic variation

d)

separates during crossing over

17.
If an organism's diploid number (2n) is 46, what is its haploid (n) number?
a)
46
b)
92
c)
23
d)
2
18.
Homologous chromosomes will have similar genes on them. However, they could have different versions of these genes. These different versions are called...
a)
Mutants
b)
Recombinants
c)
Alleles
d)
Mendel's code
19.

The failure of one or more pairs of homologous chromosomes or sister chromatids to separate "normally" during meiosis is called _____________________.

a)

nondisjunction

b)

anaphase I

c)

nondiploidy

d)

karyotype

20.
The karyotype shows an individual with Edward's Syndrome.  What is the name of the specific disorder?
a)
monomy
b)
trisomy
c)
deletion
d)
translocation
21.

Having two different alleles of the same trait is said to be

a)

heterozygous

b)

homozygous

c)

heptazygous

d)

polygenic

22.

How many sets of chromosomes are in a body (diploid) cell?

a)

1

b)

2

c)

3

d)

4

23.

Having two of the same alleles of the same trait is said to be

a)

heterozygous

b)

homozygous

c)

heptazygous

d)

polygenic

24.

Dominant Alleles are represented by

a)

numbers

b)

capital letters

c)

lowercase letters

d)

nothing

25.

Recessive Alleles are represented by

a)

numbers

b)

capital letters

c)

lowercase letters

d)

nothing

26.

Genetics is the study of

a)

people

b)

heredity

c)

the environment

d)

none of the other answers are correct

27.

A specific characteristic is known as a(n)

a)

allele

b)

trait

c)

dominance

d)

none of the other answers are correct

28.

Unlike mitosis, meiosis results in the formation of

a)

two genetically identical body (diploid) cells

b)

four genetically different gametes (haploid) cells

c)

four genetically identical gametes (haploid) cells

d)

two genetically different body (diploid) cells

29.

What is shown in the picture?

a)

independent assortment

b)

anaphase I of meiosis

c)

crossing-over

d)

incomplete dominance

30.
B = brown eyes
b = blue eyes
What is true about these two brothers that have brown eyes?
One has genotype BB the other Bb.
a)
they have same phenotype and genotype
b)
they have different genotypes and phenotypes
c)
they have same phenotype but different genotypes
d)
they have same genotype but different phenotypes
31.
If you have a parent who has GgBb as their genotype, what are the possible alleles they could donate to their gametes?
a)
GB, Gb, gB, gb
b)
GB, GB, gb, gb
c)
Gb, Gb, Gb, GB
d)
GG, BB, gg, bb
32.
How many offspring will you have in a dihybrid cross? 
a)
4
b)
8
c)
16
d)
5
33.
T4 - Black fur in mice (B) is dominant to brown fur (b). Short tails (T) are dominant to long tails (t). What percentage of the offspring of the cross BbTt x BBtt will have black fur and long tails?
a)
0%
b)
25%
c)
50%
d)
100%
34.
T4 - What genotype is missing from this Punnett Square?
a)
RrYy
b)
RRYY
c)
rryy
d)
RrYY
35.
In watermelons, green rinds (G) are dominant to striped rinds (g).  What is the genotype of a heterozygous green watermelon?
a)
GG
b)
Gg
c)
gg
d)
green
36.
In cacti, long arms (A) are dominant to short arms (a).  Suppose 2 heterozygous cacti are crossed.  What percentage of their offspring are expected to have short arms?
a)
0%
b)
25%
c)
75%
d)
100%
37.
A genotype is
a)
the listing of the alleles for the trait
b)
the physical appearance of the trait
c)
the separation of the chromosomes
d)
the letters seen on the outside of the Punnett square
38.
This is an example of a ______________.
a)
phenotype
b)
genotype
c)
xenotype
d)
base pairs
39.
The genetic make up of this flower is ________.
a)
homozygous recessive
b)
heterozygous
c)
homozygous dominant
d)
white
40.

How many males in this model show the trait?

a)

one

b)

three

c)

seven

d)

four

41.

Compared to the amount in a normal human cell, a sperm cell will have

a)

the same amount of chromsomes

b)

twice the amount of chromosomes

c)

half the amount of chromosomes

d)

one fourth the amount of chromosomes

42.

What is a fertilized egg cell called?

a)

gamete

b)

meiosis

c)

zygote

d)

mitosis

43.
What is the phenotype in the bottom right square? (Yellow is dominant and green is recessive)
a)
yy
b)
Yy
c)
yellow
d)
green
44.
What are traits that aren't dominant over each other but whose heterozygous outcome is a combination of the two equally but separately?
a)
pure dominance
b)
incomplete dominance
c)
co-dominance
d)
simple dominance
45.
What is the type of dominance when the two traits aren't dominant over each other, but whose heterozygous outcome is blended?
a)
co-dominance
b)
simple dominance
c)
incomplete dominance
d)
non-dominance
46.
What is the study of heredity?
a)
genetics
b)
cell biology
c)
chemistry
d)
botany
47.
Who was the father of genetics?
a)
Mendel
b)
Einstein
c)
Redi
d)
Pasteur
48.

A chart that tracks a particular trait in a family

a)

Punnett Square

b)

Pedigree

49.

Someone who has one recessive allele for a trait but doesn’t show it.

a)

Dominant

b)

Recessive

c)

Mutant

d)

Carrier

50.

23 pairs or 46 chromosomes

a)

Number of human chromosomes in each cell

b)

Number of nuclei in each human cell

c)

Number of letters in the alphabet

d)

Number of days in the month of February

51.

The likelihood that an event will occur

a)

Probability

b)

Ratio

52.

Human chromosomes that determine gender

a)

C and D

b)

O and P

c)

X and Y

d)

A and B

53.

What percent of offspring will have the homozygous recessive genotype?

a)

25%

b)

50%

c)

75%

d)

100%

54.

Brown (B) is dominant to green (b).

What is the probability of these parents having green offspring?

a)

1/4

b)

2/4

c)

3/4

d)

4/4

55.

Incomplete dominance is shown when these two owls mate. A brown owl (BB) crossed with a white owl (WW) produces tan (WB) offspring.

What genotype would go into box 1 of the Punnett square?

a)

WW

b)

WB

c)

BB

56.
Which significance level  
(column) do you look at when finding the critical value?
a)
.50
b)
.10
c)
.05
d)
.01
57.
How do you find critical value?
a)
where degrees of freedom lines up with significance level
b)
where significance level lines up with chi-square
c)
the difference between total and chi-square 
d)
degrees of freedom minus significance level
58.
Observed in the wild are 10 circles, 20 squares and 30 triangles. The ratio for this particular population is 2:3:5 
observed: 10 circles     expected: 
observed 20 squares    expected : 18
observed 30 triangles   expected: 30
What is the expected number for circles?
a)
6
b)
12
c)
18
d)
24
59.
Observed in the wild are 10 circles, 20 squares and 30 triangles. The ratio for this particular population is 2:3:5 
observed: 10 circles     expected: 12
observed 20 squares    expected : 18
observed 30 triangles   expected: 30
What is the degrees of freedom?
a)
1
b)
2
c)
3
d)
4
60.

What is the purpose of a Chi-Square test?

a)

To determine if there is a significant difference between the observed and expected values in an experiment.

b)

To determine if there is a statistically significant difference between the observed and expected values in an experiment.

c)

To do extra math.

d)

To conclusively prove that your null hypothesis is true or false.

61.

If the χ2 critical value = 5.99 and the

χ2 calculated value = 7.35, what is the conclusion

a)

Reject Null Hypothesis

b)

Fail to reject the Null Hypothesis

c)

there is not enough info to decide

d)

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

62.

How do you find degrees of freedom for a chi-square goodness of fit test?

a)

one less than the number of categories

b)

one less than the population size

c)

one less than the sample size

d)

two less than the sample size

63.

If the χ2 critical value = 5.99 and the

χ2 calculated value = 3.01, what is the conclusion

a)

Reject Null Hypothesis

b)

Fail to reject the Null Hypothesis

c)

there is not enough info to decide

d)

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

64.

What is the Genotype for Homozygous "B" allele

a)

IᴬIᴮ

b)

Iᴮi

c)

IᴬIᴬ

d)

IᴮIᴮ

65.

What is the Genotype for Heterozygous Type A Blood

a)

IᴬIᴮ

b)

Iᴬi

c)

IᴬIᴬ

d)

IᴮIᴮ

66.

Mrs. Canal is type A and Mr. Canal is type O. They have three children named Greg, Rosalind and Biff. Greg is type 0, Rosalind is type A and Biff is type AB...

What is Mr. Canal's Genotype?

a)

IᴬIᴬ

b)

IᴮIᴮ

c)

IᴬIᴮ

d)

ii

67.

Two parents think their baby was switched at the hospital. The mother has blood type O, the father has blood type AB and the baby has blood type B.

Complete a punnett square and then answer the question. What is the mother's genotype? What is the father's genotype?

a)

Mom genotype is IᴬIᴬ, Dad genotype is IᴬIᴮ

b)

Mom genotype is ii, Dad genotype is IᴮIᴮ

c)

Mom genotype is ii Dad genotype is IᴬIᴮ

d)

Mom genotype is ii Dad genotype is ii

68.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
69.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?
a)
XHXh
b)
XhXh
c)
XHXH
d)
XhY
70.
Which of the following genotypes belongs in the red box in the Punnett square?
a)
XBXb
b)
XbXb
c)
XbY
d)
XBY
71.

Red-green color blindness is an X-linked recessive trait in humans. A colorblind woman and a man with normal vision have a son. What is the probability that the son is color blind?

a)

100%

b)

75%

c)

50%

d)

25%

72.

Look at this cross: XBXb x XBY


What proportion of the male children are colorblind?

a)

100%

b)

75%

c)

50%

d)

25%

73.

How many alleles does a person carry for a trait?

a)

1

b)

2

c)

3

d)

4

74.

What is the mode of inheritance shown here?

a)

Recessive because it "skips" a generation

b)

Dominant because it shows up in every generation

75.

On this pedigree, the allele for curly hair is dominant. The couple labeled 2 both have curly hair, but have a daughter who does not have curly hair. Therefore, we can tell from the chart that for the couple labeled 2 -

a)

the male is heterozygous and the female is heterozygous.

b)

the male is homozygous recessive and the female is homozygous dominant.

76.

Why do all the daughters in Generation II carry the colorblind gene?

a)

Because mom passed on the gene.

b)

Because dad passed on the X chromosome.

77.
What do we use pedigrees for?
a)
To look at families
b)
To make determinations about the offspring
c)
To track traits in families
d)
Nothing
78.

If this pedigree shows a recessive disorder, what MUST the genotype of individual 4 be?

a)

HH

b)

Hh

c)

hh

79.
Does this pedigree show a dominant or recessive trait?
a)
Dominant
b)
Recessive
80.
What is the genotype of the father?
a)
AA
b)
aa
c)
Aa
d)
AA or aa

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