Free Printable Genetics

Worksheets

Genetics

Total questions: 22

Worksheet time: 20mins

Name

Class

Date

What is Heredity?

The traits passed between siblings

A bladder disease

The traits passed from parents to offspring

A disease in the DNA of animals

True Or False-

Genetics is a field of biology

False

True

An offspring will receive how many alleles from each parent to determine a specific trait?

one

two

three

five

This punnett square shows a cross between

A hybrid Parent and a Homozygous parent

A heterozygous parent and a heterozygous parent

Two homozygous parents

Two Hybrid Parents

A heterozygous long-tusked elephant is crossed with a homozygous recessive short-tusked elephant. What is the probability of the offspring having short tusks?

25%

50%

75%

What is the genotypic ratio of the offspring?

3:1

1:3

1:2:1

2:2

If green is dominant over purple, then what is the genotype for this individual?

Purple

Green

A heterozygous yellow pea plant's genotype would be:

Which of the following alleles is homozygous (purebred) recessive?

10.

What are the phenotype percentages of the offspring?

(A-Brown fur color; a-white fur color)

50 % Brown fur and 50% White fur

25 % Brown fur and 75% White fur

75 % Brown fur and 25% White fur

0% Brown fur and 100% White fur

11.

Which of the following is an inheritable genetic trait?

language

type of music you like

eye color

slow growth due to insufficient nutrition.

12.

A single cross such as flower color, is call

monohybrid

crossing over

dihybrid

homozygous

13.

This is an example of

Complete dominance

Mendelian Genetics

Codominance

Incomplete Dominance

14.

Brown fur color is dominant over black fur color. Which of the following is the actual genotype of ALL of the offspring in the next generation of this cross for fur color?
AA x aa

brown fur

15.

Term for an organism that display two dominant phenotypes at the same time

codominance

incomplete dominance

multiple alleles

linked genes

16.

Red (R) is dominant over white (r). How can a flower be white?

It can have RR and be white.

It has to have rr.

It has to have rR

There is no way it can be white until the third generation.

17.

Which is the correct phenotype for this organism?

blue

green

18.

In rabbits, black fur (B) is dominant over brown fur (b). If a rabbit has brown fur, what can you conclude about its genotype?

It is BB.

It is Bb

It is brown

It is bb.

19.

A corn plant heterozygous for tall sprouts mates with a corn plant with short sprouts. If tall sprouts are dominant, how many different phenotypes are possible in the offspring?

20.

What plant did Mendel study?

pea plant

spinach

carrots

sunflowers

21.

Why are there no white rabbit babies?

The white gene is not present in any of the babies.

It takes two recessive genes to show the trait.

Grey is a better color.

Baby five will be white.

22.

What are the possible genotypes for this cross?
(Click the picture to see it without the text)

TT = 25% Tt= 50% tt=25%

all tall

TT= 75% tt = 25%

Tt = 100%

Reset

Genetics

Total questions: 22

Worksheet time: 20mins

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