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Genetics & Punnett Squares

Total questions: 15

Worksheet time: 11mins

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.
What is the phenotype of the offspring? (A-Brown hair; a-blond hair) 
a)
50 % Brown Hair and 50% Blond Hair 
b)
25 % Brown Hair and 75% Blond Hair 
c)
75 % Brown Hair and 25% Blond Hair 
d)
0% Brown Hair and 100% Blond Hair 
3.

What is the probability of obtaining a homozygous recessive offspring from two heterozygous parents?

a)

0%

b)

75%

c)

25%

d)

50%

4.

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

a)

Aa

b)

aa

c)

AA

5.

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

6.

How many alleles (letters) does a child get from EACH parent for each trait?

a)

1

b)

2

c)

3

d)

4

7.
the genetic makeup of an organism
a)
heterozygous
b)
punnet square
c)
genotype
8.

Which of the following represents alleles for the heterozygous genotype?

a)

Aa

b)

aa

c)

AA

9.
Aa, DD, bB, yy are all examples of
a)
genotypes
b)
phenotypes
10.

Who is considered the "father of genetics"?

a)

Reginald Punnett

b)

Gregor Mendel

c)

James Watson

d)

Charles Darwin

11.

PHENOTYPE is

a)

the genetic make-up of an organism

b)

the physical trait of an organism

c)

nucleic acid

d)

Aa

12.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
13.

The prefix "hetero" means

a)

different

b)

ugly

c)

fancy

d)

same

14.

What type of plants did Gregor Mendel experiment with?

a)

Corn Plants

b)

Peanut Plants

c)

Pea Plants

d)

Basil Plants

15.

Which of the following genotypes is homozygous dominant?

a)

Yy

b)

yY

c)

yy

d)

YY