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Honors Genetics Review

Total questions: 60

Worksheet time: 30mins

Name
Class
Date
1.
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
2.
A homozygous dominant dog with brown fur is crossed with a heterozygous dog with brown fur. What are the percentages of the possible genotypes?
a)
100% BB
b)
75% BB and 25%Bb
c)
50 % BB and 50% Bb
d)
50% Bb and 50% bb
3.

What type of Genotype is this: AA?

a)

Homozygous

b)

Heterozygous

4.

What type of Genotype is this: Aa?

a)

Homozygous

b)

Heterozygous

5.

If your genotype is Bb, then you can only pass a B or b to your child but you can't pass both.

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

6.

Which of Mendel's laws states that alleles are distributed to gametes independent of one another?

a)

Law of Dominance

b)

Law of Segregation

c)

Law of Independent Assortment

7.
What can you  determine about this person based on their karyotype?
a)
They have Downs Syndrome
b)
They have Turner's Syndrome
c)
They have Edward's Syndrome
d)
They are completely Normal
8.
The visual representation of an individual's chromosomes is a 
a)
phenotype
b)
genotype
c)
karyotype
d)
stereotype
9.

Genes that are located extremely close together on a chromosome are known as

a)

Linked

b)

Analogous

c)

Heterozygous

d)

Recessive

10.

Mitosis occurs in a:

a)

Sex cell

b)

Somatic cell

11.

Meiosis occurs in a:

a)

Sex cell

b)

Somatic cell

12.

How many chromosomes are there in a somatic cell?

a)

23

b)

26

c)

43

d)

46

13.

How many divisions take place in mitosis?

a)

1

b)

2

c)

3

d)

4

14.

How many divisions take place in meiosis?

a)

1

b)

2

c)

3

d)

4

15.

How many cells are created at the end of mitosis?

a)

1

b)

2

c)

3

d)

4

16.

How many cells are created at the end of meiosis?

a)

1

b)

2

c)

3

d)

4

17.

A 2n cell of a bat has 44 chromosomes, how many chromosomes will you find in one of his gametes

a)

23

b)

22

c)

44

d)

88

18.

Squirrels have 40 chromosomes in its diploid cells. How many chromosomes will you find in their egg cells

a)

40

b)

23

c)

20

d)

Not enough information to answer the question

19.

A haploid cell from a male camel has 35 chromosomes. What type of cell is this? Choose all that apply

a)

Sperm

b)

Egg

c)

Heart Cell

d)

Muscle Cell

20.

Chromosomes that are paired by size and content are called _______ chromosomes.

a)

homeostasis

b)

homologous

c)

matching

d)

sister

21.

If a segment of a chromosome is present several times more than normal due to unequal crossing-over, it is called ____.

a)

an inversion.

b)

a translocation.

c)

a delection.

d)

a duplication.

22.

If a segment of a chromosome is turned around 180 degrees, it results in ____.

a)

an inversion.

b)

a translocation.

c)

a delection.

d)

a duplication.

23.

The process in which a segment of a chromosome breaks off and attaches to another chromosome

a)

deletion

b)

duplication

c)

inversion

d)

translocation

24.

What is the Genotype for Heterozygous Type A Blood

a)

IᴬIᴮ

b)

Iᴬi

c)

IᴬIᴬ

d)

IᴮIᴮ

25.

What is the Genotype for Type 0

a)

IᴬIᴮ

b)

Iᴬi

c)

IᴬIᴬ

d)

ii

26.

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 Mrs. Canal's genotype? How do you know?

a)

IᴬIᴬ , because Rosalind is A

b)

Iᴮi because Biff is AB

c)

Iᴬi because Greg is type O

d)

ii because it is a universal donor

27.

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...

Can BIFF be there son? Explain

a)

Yes because he has a portion of A in his blood like his mom

b)

Yes because his dad is type O and that is a universal donor

c)

No because his sister is type A blood

d)

No because neither parent has the B allele

28.
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
29.

In fruit flies, eye color is a sex linked trait. Red (R) is dominant to white (r). What is the sex and eye color of flies with the following genotype: X R Y ?

a)

male with white eyes

b)

female with white eyes

c)

male with red eyes

d)

female with red eyes

30.

H= normal blood clotting

h=hemophilia


XHXh x XHY


What is the probability that any of their offspring will have hemophilia?

a)

4/4

b)

3/4

c)

2/4

d)

1/4

31.

In plants, tall (T) is dominant to short (t). Perform the following cross: Tt x Tt. What is the probability of producing a short plant?

a)

0%

b)

25%

c)

50%

d)

75%

32.

Each one of the boxes on the Punnett square represents what probability of an offspring's genotype?

a)

25%

b)

1%

c)

10%

d)

0%

33.

Brown eyes are dominant over blue eyes. What is the probability that the offspring will have brown eyes in this cross?

a)

25%

b)

50%

c)

75%

d)

100%

34.

What type of disorder is sickle cell anemia

a)

Autosomal dominant

b)

Autosomal recessive

c)

X-linked dominant

d)

X-linked recessive

35.

Hemophilia is

a)

sex linked dominant

b)

sex linked recessive

c)

autosomal dominant

d)

autosomal recessive

36.

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

a)

HH

b)

Hh

c)

hh

37.
What type of heredity is shown in the pedigree?
(hint: check your notes - "modes of inheritance")
a)
Sex-Linked Dominant
b)
Sex-Linked Recessive
c)
Autosomal Dominant
d)
Autosomal Recessive 
38.
What is the mode of inheritance shown here?
a)
Autosomal Recessive
b)
Autosomal Dominant
c)
Sex Linked
39.
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. 
40.

What is one of the advantages of reproducing sexually versus asexually?

a)

underproduction of offspring

b)

overproduction of offspring

c)

genetic variation

d)

artificial selection

41.

What is the probability that the following parents will produce the given offspring?

Male: AaBb

Female: aaBB

Offspring: AaBB

a)

50%

b)

12.5%

c)

25%

d)

100%

42.

What is the probability that the following parents will produce the given offspring?

Male: AaBbCC

Female: AaBBcc

Offspring: AABbCc

a)

50%

b)

12.5%

c)

25%

d)

100%

43.

What is the probability that the following parents will produce the given offspring?

Male: AaBbCc

Female: AaBBCc

Offspring: AaBbCC

a)

50%

b)

12.5%

c)

25%

d)

6.25%

44.

Involves two parents and produces offspring different from parents

a)

external fertilization

b)

sexual reproduction

c)

internal fertilization

d)

asexual reproduction

45.

Type of reproduction that makes an identical copy of a parent cell

a)

sexual reproduction

b)

asexual reproduction

c)

internal fertilization

d)

external fertilization

46.

Variation in the cells/organisms produced...

a)

Mitosis

b)

Meiosis

47.

Identical copies are most related to...

a)

Mitosis and Sexual Reproduction

b)

Meiosis and Asexual Reproduction

c)

Mitosis and Asexual Reproduction

d)

Meiosis and Sexual Reproduction

48.

Unique and different offspring is...

a)

Mitosis and Sexual Reproduction

b)

Meiosis and Asexual Reproduction

c)

Mitosis and Asexual Reproduction

d)

Meiosis and Sexual Reproduction

49.
a)
Mitosis
b)
Meiosis
50.
Egg and Sperm are most related to...
a)
Mitosis
b)
Meiosis
51.

New cell has 46 chromosomes

a)

Mitosis

b)

Meiosis

52.

New cell has 23 chromosomes

a)

Mitosis

b)

Meiosis

53.
A cell with 10 chromosomes go through meiosis. What is the end result of the process
a)
4 cells with 10 chromosomes each
b)
2 cells with 10 chromosomes each
c)
4 cells with 5 chromosomes each
d)
2 cells with 5 chromosomes each
54.
Which cellular process is shown?
a)
meiosis
b)
endocytosis
c)
mitosis
d)
cellular respiration
55.
Crossing over occurs in an early stage
a)
mitosis
b)
meiosis
c)
both
56.

In a pedigree, which shape represents a male?

a)

circle

b)

square

57.

On a pedigree, this symbol represents a ---

a)

not affected female.

b)

not affected male.

c)

affected male.

d)

affected female.

58.

On a pedigree, this symbol represents a ----

a)

not affected male.

b)

not affected female.

c)

affected male.

d)

affected female.

59.

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.

60.

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.

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