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Punnett Square Review

Total questions: 22

Worksheet time: 19mins

Name
Class
Date
1.

The Austrian Monk who is deemed the Father of Genetics?

a)

John Hammond

b)

Gregor Mendel

c)

Isaac Newton

d)

Mr. Betenson

2.

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

a)

recessive

b)

dominant

c)

lower case letter

d)

both

3.

What type of inheritance pattern is shown here?

a)

incomplete dominance

b)

dominant

c)

recessive

d)

codominance

4.

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)

0%

b)

25%

c)

75%

d)

100%

5.
Heterozygous is when...
a)
the alleles are the same
b)
the alleles are different
c)
the alleles are absent
d)
the alleles are present
6.
Dominant alleles are represented by a:
a)
Male gene
b)
lowercase letter
c)
recessive trait
d)
capital letter
7.
What you see, or the physical appearance.
a)
Genotype
b)
Phenotype
c)
Homozygous
d)
Heterozygous
8.

What is the passing of genetic traits from parent to offspring called?

a)

heredity

b)

gene

c)

trait

d)

allele

9.

Having two different genes for a trait is sometimes called hybrid. What else can this be called?

a)

protein

b)

homozygous

c)

codominant

d)

heterozygous

10.

What is a single piece of coiled DNA found in the cells that contains genes that encode traits?

a)

gene

b)

trait

c)

chromosome

d)

DNA

11.

When two traits are blended together, what is this called?

a)

incomplete dominance

b)

codominance

c)

heterozygous

d)

homozygous

12.

What type of inheritance pattern is shown here?

a)

incomplete dominance

b)

dominant

c)

recessive

d)

codominance

13.

AA and Aa always show up as ---

a)

dominant.

b)

recessive.

14.

B = brown fur b = white fur

In the punnett square, what is the probability for white fur?

a)

0%

b)

25%

c)

50%

d)

75%

15.

In a heterozygous genotype, the ___________ allele takes over in the phenotype.

a)

recessive

b)

dominant

c)

both

16.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
17.
the condensed form of DNA is called________________
a)
an allele
b)
a gene
c)
a chromosome
d)
a phenotype
18.
What are the possible genotypes for this cross?
a)
TT = 25% Tt= 50% tt=25%
b)
all tall
c)
TT= 75% tt = 25%
d)
Tt = 100%
19.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%
20.
A person heterozygous for wet earwax (Ww) mates with a person homozygous recessive for dry earwax. What is the chance their baby is heterozygous?
a)
0%
b)
25%
c)
50%
d)
100%
21.

Which of the following is a phenotype?

a)

Aa

b)

red hair

c)

heterozygous

d)

DNA

e)

I don't know.

22.
Which of the following is NOT a genotype?
a)
heterozygous
b)
a trait
c)
Bb
d)
homozygous recessive