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Punnett Square Final

Total questions: 20

Worksheet time: 21mins

Name
Class
Date
1.
B = brown fur  b = white fur
In the punnett square, what is the probability for white fur? 
a)
0%
b)
25%
c)
50%
2.

B = brown fur  b = white fur
In the punnett square, what is the probability for brown fur? 

a)
0%
b)
25%
c)
50%
3.

Create your own Punnett Square and solve the following question

In plants, tall (T) is dominant to short (t). Perform the following cross: Tt x Tt. What is the probability of producing a short plant?

a)
25%
b)
50%
c)
75%
4.

Create your own Punnett Square and solve the following question

In plants, tall (T) is dominant to short (t). Perform the following cross: Tt x Tt. What is the probability of producing a tall plant?

a)
25%
b)
50%
c)
75%
5.
What is the probability of heterozygous offspring?
a)
25%
b)
50%
c)
0%
6.

Which of the following genotypes is homozygous dominant?

a)

aa

b)

Aa

c)

AA

7.

Which of the following alleles is recessive?

a)

Tt

b)

tt

c)

TT

8.
Which of the following genotypes is heterozygous?
a)
Bb
b)
BB
c)
bb
9.

Which of the following genotypes is homozygous recessive?

a)
Bb
b)
BB
c)
bb
10.

Which of the following genotypes is homozygous dominant?

a)
Aa
b)
AA
c)
aa
11.

What did Gregor Mendel study?

a)

Mold Spores

b)

Pea Plants

c)

Sun Flowers

12.

Humans have _______ pairs of chromosomes, for a total of _______ chromosomes.

a)

10, 20

b)

25, 100

c)

23, 46

13.
Homozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
14.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
15.
This image shows a...
a)
Punnett Square
b)
Phenotype
c)
Genotype
16.

an observable characteristic is also known as a

a)

trait

b)

personality

c)

cell

17.

Who is Gregor Mendel

a)

A Scientist from the mid 1800s who contributed to the study of Genetics

b)

The scientist who discovered the structure of DNA

c)

a British scientist who discovered penicillin

18.

The physical trait (appearance) that can be seen.

a)
Genotype
b)
Phenotype
c)
Homozygous
19.

What are the phenotypes in this picture

a)

WW, Ww, ww

b)

Widows Peak vs Straight Hair Line

20.

What are the genotypes in this picture?

a)

WW, Ww, ww

b)

Widows Peak vs Straight Hair Line