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Genetics Exam Prep

Total questions: 81

Worksheet time: 14hrs 30mins

Name
Class
Date
1.
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
2.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
3.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
4.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
5.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
6.
Magda is a tall, 11 year old drummer. She has a scar on her right cheek. She is good at swimming. Which of her traits did Magda most likely inherit?
a)
height
b)
the scar
c)
ability to swim
d)
ability to play drums
7.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
8.
G = green, g = yellow
The genotype for a yellow plant is...
a)
GG
b)
Gg
c)
gg
d)
all of the choices result in yellow
9.

Punnett Square #1

In plants tall is dominant to short.

Cross two heterozygous plants.

What is the phenotypic ratio?

a)

1:2:1

b)

2:2

c)

3:1

10.

Which of the choices is homozygous recessive?

a)

BB

b)

Bb

c)

bb

11.

Which of the choices is homozygous dominant?

a)

BB

b)

Bb

c)

bb

12.

The passing on of traits and behaviors from parents to their offspring is

a)

offspring

b)

heredity

c)

DNA

d)

genes

13.

Only takes 1 in a gene pair for a trait to show up

a)

recessive genes

b)

DNA

c)

offspring

d)

dominant genes

14.

A physical feature that you are born with

a)

acquired trait

b)

inherited trait

c)

instinct

d)

learned behavior

15.

Which statement/statements is/are true?

a)

Inherited traits are physical features that you are born with.

b)

An acquired trait is a physical feature that you get as a result of something you do or because of an experience.

c)

Inherited means to pass from offspring to parents through genes in cells.

d)

You are born with learned behaviors.

16.

A learned behavior is an action you are taught or learn from experience.

a)

True

b)

False

17.
Which best explains why children resemble their parents?
a)
they eat same foods
b)
they have similar DNA
c)
they speak the same language
d)
they have the same interests
18.

Which statement is true?

a)

Your DNA is identical to your siblings.

b)

Your DNA is identical to your father's.

c)

Your DNA is identical to your mother's.

d)

Your DNA is unique to you.

19.

Who was Gregor Mendel?

a)

Father of genetics

b)

Father of cells

c)

Coined the term heredity

d)

No one

20.

True or False: Human cells have a diploid number of 40

a)

true

b)

false

21.

True or False: You can be blood type AB because A and B are co-dominant

a)

true

b)

false

22.
The sex of a child is determined by
a)

whether the father's sperm contains an x or y chromosome

b)

whether the mother's egg contains an x or y chromosome

c)

the age of the parents

d)

whether the mother's egg contains an xx or xy

23.
What goes in box 3
a)
Aabb
b)
AABB
c)
AAbb
d)
aaBb
24.

What goes in box 15

a)

aabb

b)

AABB

c)

aaBB

d)

AAbb

25.
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%
26.
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
27.
Using the dihybrid cross and key provided, what is the probability of the offspring being tall and white?
a)
9
b)
2
c)
3
d)
6
28.

Based off this punnett square, what fraction of the offspring will have wrinkled, green seeds?

a)

9/16

b)

3/16

c)

1/16

d)

16/16

29.
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
30.
Assume mom's gametes are on the left, what is her genotype?
a)
TTZz
b)
TtZz
c)
ttZZ
d)
TtZZ
31.
Assume dad's gametes are on top, what is his genotype?
a)
AAPP
b)
AaPp
c)
aaPP
d)
Aapp
32.
This is an example of a ______________.
a)
phenotype
b)
genotype
c)
xenotype
d)
base pairs
33.
The genetic make up of this flower is ________.
a)
homozygous recessive
b)
heterozygous
c)
homozygous dominant
d)
white
34.

Someone with Type A blood has... (antigens = specific surface proteins)

a)

A antigens

b)

A antibodies

c)

B antigens

d)

A & B antigens

35.
A red flowered plant (RR) breeds with a White flowered plant (WW). The gene for petal color in these plants expresses incomplete dominance.  What percentage of the offspring will have pink (RW) flowers?
a)
0%
b)
25%
c)
50%
d)
100%
36.
This type of inheritance pattern shows BOTH traits in possible offspring
a)
complete dominance
b)
incomplete dominance
c)
co-dominance
d)
dominant pattern
37.

Incomplete dominance occurs in cats, which allows them to be Black, White, or gray as shown on this Punnett square. What percentage of the offspring will be white?

a)

25

b)

50

c)

0

d)

100

38.

Produces 2 daughter cells

a)

Mitosis

b)

Meiosis

c)

Both

39.

Produces body cells

a)

Mitosis

b)

Meiosis

c)

Both

40.

Helps create genetic variation

a)

Mitosis

b)

Meiosis

c)

Both

41.

Crossing over occurs during Prophase I

a)

Mitosis

b)

Meiosis

c)

Both

42.

Produces 4 daughter cells

a)

Mitosis

b)

Meiosis

c)

Both

43.

Produces diploid cells

a)

Mitosis

b)

Meiosis

c)

Both

44.

cytokinesis occurs at the end

a)

Mitosis

b)

Meiosis

c)

Both

45.

What is the primary cause of genetic variation during meiosis?

a)

chromosomes lining up

b)

"crossing over" of chromosomes

c)

separation of chromosomes

d)

chromosomes pulling apart

46.

Which type of asexual reproduction does this picture represent?

a)

binary fission

b)

vegetative propagation

c)

regeneration

d)

budding

47.

Asexual reproduction creates offspring that are

a)

genetically identical to the parent

b)

different from the parent

c)

different from each other

d)

formed by 2 parents

48.

Budding, vegetative propagation, regeneration, and binary fission are all types of

a)

sexual reproduction

b)

asexual reproduction

49.

Plants like potatoes and strawberries reproduce by

a)

regeneration

b)

binary fission

c)

vegetative propagation

d)

budding

50.

The type of asexual reproduction shown in the diagram is called

a)

regeneration

b)

binary fission

c)

vegetative propagation

d)

budding

51.

The type of asexual reproduction shown in the picture is called

a)

regeneration

b)

binary fission

c)

vegetative propagation

d)

budding

52.

The egg cell of a koala contain 12 chromosomes. How many chromosomes does a normal cell contain?

a)

6

b)

12

c)

24

d)

36

53.

A hydra has 32 chromosomes and reproduces by budding. How many chromosomes does its offspring have?

a)

8

b)

16

c)

32

d)

64

54.

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

55.

Gametes are made in

a)

skin cells

b)

stomach cells

c)

reproductive systems

d)

the circulatory system

56.

Advantages of sexual reproduction are

a)

selective breeding

b)

saves time

c)

saves energy

d)

genetic variation

57.

What is a fertilized egg cell called?

a)

gamete

b)

meiosis

c)

zygote

d)

mitosis

58.

a piece of an organism develops into a fully grown copy.

a)

vegetative propagation

b)

budding

c)

fragmentation

d)

binary fission

59.

What are the male and female gametes in PLANTS sexual reproduction?

a)

Sperm

Ovum

b)

Pollen

Ovules

60.

Sexual, Asexual, or Both?

a)

Sexual

b)

Asexual

c)

Both

d)

Neither

61.
If two organisms reproduce sexually, then their offspring will exhibit a genetic makeup that is -
a)
identical to only one parent
b)
identical to all of its siblings
c)
a unique combination of traits
d)
the recessive traits of each parent
62.

Which of the following genotypes shows a CARRIER for a trait?

a)

XBXb

b)

XbXb

c)

XBXB

d)

XbY

63.

Colorblindness is a recessive X-linked disorder.

Which genotype represents a male with normal vision?

a)

XN YN

b)

Xn Yn

c)

XN Y

d)

Xn Y

64.

A gene that is located on 1 of the first 44 chromosomes is called _____.

a)

autosomal

b)

x-linked

c)

dominant

d)

recessive

65.
Which of the following genotypes belongs in the red box in the Punnett square?
a)
XBXb
b)
XbXb
c)
XbY
d)
XBY
66.
The sex of a child is determined by
a)

whether the father's sperm contains an x or y chromosome

b)

whether the mother's egg contains an x or y chromosome

c)

the age of the parents

d)

whether the mother's egg contains an xx or xy

67.

In the case of sex-linked traits, only females can be carriers.

a)

true

b)

false

68.

Any unexpected change to the genome

a)

Mutation

b)

Epistasis

c)

Codominance

d)

Incomplete dominance

69.

What is NOT a possible genotype for someone with type B blood?

a)

BB

b)

AB

c)

BO

70.

Examples include skin color and height (the individual's phenotype exists somewhere along a spectrum)

a)

polygenic inheritance

b)

multiple alleles

c)

linked genes

d)

incomplete dominance

71.
This is when a trait is controlled by more than one gene.
a)
Multiple alleles
b)
Polygenetic inheritance
c)
Codominance
d)
Incomplete Dominance 
72.

Two genes interact with each other to influence flower color. The first gene controls the ability to make flower pigment. If pigment is made, the second gene codes for either Purple (P) or white (p) flowers.

a)

Extranuclear inheritance

b)

Epistasis

c)

Linkage

d)

Continuous variation

73.

Two genes interact with each other to influence flower color. The first gene controls the ability to make flower pigment. If pigment is made, the second gene codes for either Purple (P) or white (p) flowers.

a)

Extranuclear inheritance

b)

Epistasis

c)

Linkage

d)

Continuous variation

74.

The alleles must separate when gametes are formed

a)

Trait

b)

The Law of Segregation

c)

Allele

d)

Homozygous

75.

In dihybrid crosses, the alleles for the two traits segregate independently of each other when gametes are formed. So when looking at a parent with two traits there are four possible combinations when gametes are formed.

a)

Heterozygous

b)

The Law of Independent Assortment

c)

Molecular genetics

d)

Cross

76.

What were the two purebred plants Mendel used in his first set of experiments?

a)

round and wrinkled seeds

b)

tall and short stems

c)

red and green leaves

d)

smooth and spiky pods

77.

What is the process by which Mendel cross-pollinated pea plants?

a)

Injecting pollen into the plants with a syringe

b)

Waiting for the wind to carry pollen from one plant to another

c)

Manually transferring pollen from the stamen of one plant to the pistil of another plant

d)

Using a watering can to sprinkle pollen on the plants

78.

What is the name of the plant that Mendel used for his experiments?

a)

cactus plants

b)

rose plants

c)

sunflower plants

d)

pea plants

79.

One of the different forms of a single gene, either dominant or recessive.

a)

Allele

b)

DNA

c)

Chromosome

d)

Genome

80.

This Austrian monk is known as the Father of Modern Genetics.

a)

Albert Einstein

b)

Gregor Mendel

c)

Charles Darwin

d)

Isaac Newton

81.

The molecular instructions for building all living organisms.

a)

cells

b)

DNA

c)

elements

d)

nucleus

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