wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Basic Genetics (Animal Science)

Total questions: 79

Worksheet time: 1hrs 11mins

Name
Class
Date
1.

Which shows a correct Heterozygous pairing of alleles?

a)

Aa

b)

aA

c)

AA

d)

aa

2.

If having a Spotted Coat is Dominant and a Solid coat is Recessive then what would the following Allele Combination’s PHENOTYPE be?—-> tt

a)

Spotted

b)

Striped

c)

Solid

3.

If a parent’s Genotype was Aa,DD what possible combination of alleles they could give to it’s offspring?

a)

Aa

b)

AD

c)

aD

d)

Ad

e)

DD

4.

If a parent’s Genotype was AA,DD what possible combination of alleles they could give to it’s offspring?

a)

Aa

b)

AD

c)

aD

d)

Ad

e)

DD

5.

If a parent’s Genotype was aa,DD what possible combination of alleles they could give to it’s offspring?

a)

Aa

b)

AD

c)

aD

d)

Ad

e)

DD

6.

If a parent’s Genotype was aa,Dd what possible combination of alleles they could give to it’s offspring?

a)

Aa

b)

AD

c)

aD

d)

Ad

e)

ad

7.

Parents can only give half their genetic information to their offspring, therefore a Heterzygous Animal (Aa) can give A or a.

a)

True

b)

False

8.

Parents can only give half their genetic information to their offspring, therefore a Homozygous Animal (aa) can give Only a.

a)

True

b)

False

9.

If I tell you a parent is Heterozygous for Brown eyes. Which allele is recessive?

Brown vs Green eyes

a)

Green

b)

Brown

10.

the father of genetics

a)

James Watson

b)

Robert Hooke

c)

Gregor Mendel

d)

Reginald Punnett

11.

One of two or more alternative forms of a gene that arise by mutation and are found at the same place on a chromosome.

a)

alleles

b)

DNA

c)

dominant gene

d)

inherited

12.

the child or young of two parents

a)

phenotype

b)

species

c)

purebred

d)

offspring

13.

A distinguishing characteristic or quality, a feature that is inherited such as flower color, hair color, and height.

a)

hybrid

b)

trait

c)

chromosomes

d)

heredity

14.

the passing of traits from a parent to its offspring

a)

hybrid

b)

Heterozygous

c)

heredity

d)

Homozygous

15.

a gene whose expression can be hidden

a)

recessive gene

b)

dominant gene

16.

a gene that can hide the effect of a recessive gene

a)

dominant gene

b)

recessive gene

17.

A chart used to show all the ways genes from two parents can combine and be passed to offspring is a

a)

Pie chart

b)

Line graph

c)

Bar graph

d)

Punnett Square

18.

The likelihood or chance that a specific outcome will occur out of a total number of outcomes

a)

heredity

b)

probability

c)

percentage

d)

ratio

19.

An organism that inherits two different alleles from its parents

a)

dominant

b)

recessive

c)

homozygous

d)

heterozygous

20.

blue eyes, curly hair

a)

genotype

b)

phenotype

21.

Rr, Ff

a)

homozygous

b)

heterozygous

22.
Which of these is an inherited behavior?
a)
A chameleon changing color
b)
A dog sitting on command
c)
A circus bear riding a bike
d)
An ape speaking in sign language
23.
The part of a cell that contains the genes controlling how something grows and what it becomes is called _________________.
a)
trait
b)
gene
c)
chromosome
d)
offspring
24.
Which is an acquired trait?
a)
Large nose
b)
Speaking Spanish
c)
Blonde hair
d)
Height
25.
The passing of characteristics from parents to offspring is called....
a)
babies
b)
offspring
c)
genetics
d)
heredity
26.

When the phenotype of the two alleles blend.

a)

Codominance

b)

Incomplete Dominance

c)

Dominant allele

d)

Recessive allele

27.

When an organism that has both alleles of a gene displays both phenotypes at the same time.

a)

Codominance

b)

Incomplete Dominance

c)

Dominant allele

d)

Recessive allele

28.

How many chromosomes do humans have in their cells?

a)

23-all from mom

b)

23-all from dad

c)

46-23 from mom and 23 from dad

d)

23-11.5 from mom and 11.5 from dad

29.
Tortoiseshell cats, like the one pictured, are a patchwork of red and black fur. These cats have one allele for red fur and one for black fur. Therefore, these two alleles are clearly...
a)
Incompletely dominant to each other
b)
Codominant
c)
Black must be dominant to red
d)
Linked to eye color
30.
Which of the following is a gamete?
a)
Skin cell
b)
White blood cell
c)
Egg cell
d)
Hair follicle cell
31.
A sperm cell would be considered __________, because it has _______ as many chromosomes as a normal cell.
a)
Haploid, half
b)
Diploid, half
c)
Haploid, twice
d)
Diploid, twice
32.
Who was Gregor Mendel?
a)
A friar who studied inheritance in pea plants
b)
A friar who studied meiosis in fire ants
c)
An American who studied disease resistance in mice
d)
An American who studied the structure of DNA
33.
Squirrels have a lot of important genes. Which of the following sets of squirrel genes is completely heterozygous?
a)
AaGgYyWw
b)
AAGGYYWW
c)
aaggyyww
d)
AaggYyww
34.
Rainbow horns are dominant to yellow horns in unicorns. If a homozygous dominant unicorn mates with a yellow horned unicorn, what percent of the baby unicorns will have rainbow horns?
a)
100%
b)
50%
c)
25%
d)
0%
35.
Freckles are (effectively) a dominant trait. A man with freckles has a child with a woman who also has freckles.
However, the kid does not have freckles. What is a reasonable conclusion?
a)
It's not his kid
b)
Both parents are heterozygous for freckles
c)
The mother must be homozygous recessive for freckles
d)
There's a monosomy of the freckle chromosome
36.
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
37.
Turtle shell color and eye color are controlled by two separate genes. If two turtles mate and we are solving for both of these two traits, then this is a...
a)
Dihybrid cross
b)
Monohybrid cross
c)
Impossible cross
d)
Nonhybrid cross
38.
The process of making changes in the DNA code of a living organism is called
a)
selective breeding 
b)
genetic engineering
c)
inbreeding
d)
hybridization
39.
William's mother is a carrier for hemophilia.  What are the chances that William will be a hemophiliac?
a)
0%
b)
25%
c)
50%
d)
75%
40.
Dark hair and no dimples are the dominant forms of these traits.  Jack's mom has dark hair and no dimples and his dad has blonde hair with dimples.  Which traits are most likely for Jack?
a)
blonde hair and dimples
b)
dark hair and dimples
c)
dark hair and no dimples
d)
blonde hair and no dimples
41.
Which statement is true of a plant with genotype TT and another with genotype Tt?
a)
Each would have differing phenotypes.
b)
All alleles are recessive.
c)
All alleles are dominant.
d)
Both have the same phenotype.
42.
Tall plants are dominant.  Which statement is true of the plant offspring using this Punnett Square?
a)
50% of the offspring will be short.
b)
75% of the offspring will be tall.
c)
100% of the offspring will be heterozygous.
d)
25% of the offspring will be tall.
43.

____ of offspring would have the same phenotype as the parents if the cross was Yy by Yy?

a)

25%

b)

50%

c)

75%

44.

____ of offspring would have the same phenotype as the parents if the cross was Yy by Yy?

a)

25%

b)

50%

c)

75%

45.
What is the genotype ratio of offspring when 2 heterozygous plants (Tt) for a certain trait are crossed?
a)
2:2:0
b)
4:0:0
c)
0:2:2
d)
1:2:1
46.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
47.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
48.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
49.
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
50.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
51.
What is the genotype for this organism?
(E= 3 eyes, e= 1 eye)
a)
EE
b)
Ee
c)
ee
d)
EE or Ee
52.
This image shows a...
a)
Punnett Square
b)
Phenotype
c)
Genotype
d)
Dominant allele
53.
 Dominant alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
54.
 Recessive alleles are-
a)
capital
b)
lowercase
c)
both
d)
neither
55.

Which of the following are GENOTYPES?

a)

crooked pinky finger

b)

Dd

c)

QQ

d)

Orange teeth

e)

ff

56.

A genotype with two dominant alleles is known as:

a)

Homozygous dominant

b)

homozygous recessive

c)

heterozygous

57.

A genotype with two different alleles is known as:

a)

homozygous dominant

b)

homozygous recessive

c)

heterozygous

58.

Blue eyes are dominant in huskies. What genotype(s) might this husky have?

a)

BB

b)

Bb

c)

bb

d)

blue eyes

59.

Which of the following describes heredity?

a)

A tiger teaching its young how to hunt

b)

A tree making food by photosynthesis

c)

Bacteria dividing into to make a new bacteria

d)

An animal eating a plant

60.

___________ reproduction happens when sex cells from both parents join.

a)

Asexual

b)

Sexual

c)

Binary fission

d)

Budding

61.
Colorblindness is a sex-linked recessive disorder. A normal woman whose father was colorblind marries a man with normal color vision. What percentage of their sons will be colorblind?
a)
0%
b)
25%
c)
50%
d)
100%
62.
Hemophilia is a sex-linked recessive disorder. A woman with hemophilia marries an unaffected man whose father had hemophilia. What percentage of their daughters will have hemophilia?
a)
0%
b)
25%
c)
50%
d)
100%
63.
Colorblindness is a sex-linked recessive disorder. If the daughter of a couple is colorblind, what are the two possible genotypes of her mother?
a)
XAXA and XAXa
b)
XAXA and XaXa
c)
XAXa and XaXa
d)
Cannot be determined
64.
If a trait shows up more commonly in men than women it is probably
a)
not inherited
b)
on the x chromosome and dominant
c)
on the x chromosome and recessive
d)
on a normal body chromosome
65.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
66.
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
67.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?
a)
XHXh
b)
XhXh
c)
XHY
d)
XhY
68.
Which of the following genotypes belongs in the red box in the Punnett square?
a)
XBXb
b)
XbXb
c)
XbY
d)
XBY
69.
Vitamin D resistant rickets (deformed bone formation) is a sex-linked DOMINANT trait.  According to the Punnett square, what percentage of female offspring will have the disorder?
a)
0%
b)
25%
c)
50%
d)
100%
70.

Which of these pertains to Mendel's law of independent assortment?

a)

observable characteristics of a trait

b)

protein production

c)

random distribution of alleles

d)

separation of alleles during meiosis

71.

An organism with the genotype DD for a trait is __. Select all that apply.

a)

dominant

b)

recessive

c)

homozygous

d)

heterozygous

72.

Which of these statements is not true of inbreeding?

a)

Desired traits can be passed to offspring.

b)

Undesired traits can be eliminated.

c)

Two closely related organisms are bred together.

d)

Harmful recessive traits can never be passed to offspring.

73.

Which statement is true of carriers? Select all that apply (there could be multiple possible correct answers).

a)

They can pass a recessive disorder gene on to offspring.

b)

They express the recessive trait.

c)

They have one dominant allele.

d)

They are heterozygous for a recessive disorder gene.

74.

Traits controlled by genes on the X chromosome are called sex-linked traits. In what individuals are recessive sex-linked traits more commonly expressed?

a)

females because they have two X chromosomes

b)

males because they have only one X chromosome

c)

females because they have no Y chromosome

d)

males because they have a Y chromosome

75.
What genotype is missing from this Punnett Square?
a)
RrYy
b)
RRYY
c)
rryy
d)
RrYY
76.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
77.
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
78.
An individual's sex is determined by 
a)
1 of 23 chromosomes
b)
2 of 46 chromosomes
c)
4 of 92 chromosomes
79.

Which statement pertains to Mendel's law of segregation?

a)

Two alleles for each trait separate during meiosis.

b)

Homozygous organisms are called hybrids.

c)

Dominant traits are visible.

d)

Allele pairs are called a genotype.

Similar Resources on Wayground

Practice questions cardiovascular

74 questions

Practice questions cardiovascular

quiz

Worksheet

•

9th - 12th Grade

Biology EOC Review

82 questions

Biology EOC Review

quiz

Worksheet

•

9th - 12th Grade

Spring 2022 Final

74 questions

Spring 2022 Final

quiz

Worksheet

•

8th - 12th Grade

STAAR Biology Review

78 questions

STAAR Biology Review

quiz

Worksheet

•

9th - 12th Grade

Voc. Challenge Cat. 4 Science

84 questions

Voc. Challenge Cat. 4 Science

quiz

Worksheet

•

5th Grade - University

DOK 1 EOC Review

79 questions

DOK 1 EOC Review

quiz

Worksheet

•

6th - 12th Grade

Semester 2 Review Practice Gen

75 questions

Semester 2 Review Practice Gen

quiz

Worksheet

•

9th - 12th Grade

Science Evolutions Test

77 questions

Science Evolutions Test

quiz

Worksheet

•

9th Grade - University