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Genetics & Punnett Squares

Total questions: 18

Worksheet time: 9mins

Name
Class
Date
1.

What is a GENOTYPE?

a)

the genetic make-up of an organism

b)

the physical trait of an organism

c)

mitosis

d)

meiosis

2.

Which of the following are GENOTYPES? (select all correct answers)

a)

black hair

b)

homozygous dominant

c)

heterozygous

d)

blue eyes

e)

BB

3.

PHENOTYPE is

a)

the genetic make-up of an organism

b)

the physical trait of an organism

c)

nucleic acid

d)

Aa

4.

Which of the following are PHENOTYPES?

a)

green skin

b)

Aa

c)

homozygous recessive

d)

purple eyes

e)

black fur

5.

The prefix "homo" means

a)

different

b)

same

c)

tomorrow

d)

never

6.

The prefix "hetero" means

a)

different

b)

ugly

c)

fancy

d)

same

7.

Which of the following represents alleles for the homozygous dominant genotype?

a)

Aa

b)

aa

c)

AA

8.

Which of the following represents alleles for the homozygous recessive genotype?

a)

Aa

b)

aa

c)

AA

9.

Which of the following represents alleles for the heterozygous genotype?

a)

Aa

b)

aa

c)

AA

10.

If A = red fur and a = white fur, what color fur would Aa be? (Assume Mendelian inheritance)

a)

red

b)

white

c)

purple

d)

blue

11.

If A = red fur and a = white fur, what color fur would AA be? (Assume Mendelian inheritance)

a)

red

b)

white

c)

purple

d)

blue

12.

If A = red fur and a = white fur, what color fur would aa be? (Assume Mendelian inheritance)

a)

red

b)

white

c)

purple

d)

blue

13.

If A = red fur and a = white fur, what are the PHENOTYPIC ratios of the offspring based on the Punnett Square?

a)

25% heterozygous

b)

50% purple

c)

75% red fur and 25% white fur

d)

25% homozygous recessive, 50% heterozygous, 25% homozygous dominant

14.

If A = red fur and a = white fur, what are the GENOTYPIC ratios of the offspring based on the Punnett Square?

a)

25% heterozygous

b)

50% purple

c)

75% red fur and 25% white fur

d)

25% homozygous recessive, 50% heterozygous, 25% homozygous dominant

15.

If A = green pods and a = yellow pods, what are the GENOTYPIC RATIOS of the offspring in the Punnett square?

a)

100% green pods

b)

100% yellow pods

c)

100% heterozygous

d)

100% homozygous dominant

16.

If A = green pods and a = yellow pods, what are the PHENOTYPIC RATIOS of the offspring in the Punnett square?

a)

100% green pods

b)

100% yellow pods

c)

100% heterozygous

d)

100% homozygous dominant

17.

If A = green pods and a = yellow pods, what are the PHENOTYPIC RATIOS of the offspring of a cross between two homozygous recessive parents? (Hint: Make a Punnet Square)

a)

100% green pods

b)

100% yellow pods

c)

100% heterozygous

d)

100% homozygous dominant

18.

If A = green pods and a = yellow pods, what are the PHENOTYPIC RATIOS of the offspring of a cross between a homozygous dominant parent and heterozygous parent? (Hint: Make a Punnet Square)

a)

100% green pods

b)

100% yellow pods

c)

100% heterozygous

d)

100% homozygous dominant