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Mendelian Genetics Review

Total questions: 18

Worksheet time: 17mins

Name
Class
Date
1.

The genotype AA is an example of

a)

Heterozygous

b)

Homozygous recessive

c)

Homozygous dominant

2.

The trait you see is (a)   .

Choose from the below words
Genotype
Phenotype
Dominant
Recessive
3.

Which kind of trait is ALWAYS seen?

a)

Dominant

b)

Recessive

c)

Allele

d)

Genotype

4.

Guinea pigs can be either hairy (H) or hairless (h). What is the homozygous recessive genotype?

a)

HH

b)

Hh

c)

hh

d)

h

5.

Genotype aa is an example of

a)

homozygous recessive

b)

heterozygous

c)

homozygous dominant

6.

Genotype Aa is an example of

a)

homozygous recessive

b)

homozygous dominant

c)

heterozygous

7.

Dominant traits are always the most common.

a)

TRUE

b)

FALSE

8.

Guinea pigs can be either hairy (H) or hairless (h). Which trait is dominant?`

a)

Hairless

b)

Hairy

9.

Guinea pigs can be either hairy (H) or hairless (h). What is the heterozygous genotype?

a)

HH

b)

Hh

c)

hh

d)

h

10.

To see a recessive trait, you need

a)

one lower-case letter

b)

one capital letter

c)

two lower-case letters

d)

two capital letters

11.

A genotype with two different alleles is called

a)

Homozygous

b)

Heterozygous

c)

Dominant

d)

Recessive

12.

Passing traits from parents to offspring is called (a)   .

13.

What is the probability that two heterozygous parents will have homozygous recessive offspring?

a)

25%

b)

50%

c)

75%

d)

100%

14.

What is the probability that two homozygous dominant parents will have heterozygous offspring?

a)

25%

b)

50%

c)

100%

d)

0%

15.

What is the probability that a homozygous recessive and a heterozygous cross will produce the dominant PHENOTYPE?

a)

0%

b)

25%

c)

50%

d)

75%

16.

Where do we get new genes?

a)

Punnett squares

b)

mutations

c)

heredity

d)

genetics

17.

Which one is an allele?

a)

GG

b)

Gg

c)

G

d)

GATC

18.

What organism did Mendel study?

a)

Humans

b)

Dolphins

c)

Pea plants

d)

Trees