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Mendel Genetics Quiz

Total questions: 19

Worksheet time: 18mins

Name
Class
Date
1.
What do we call the single letter of a genotype?
a)
Heterozygous
b)
Trait
c)
Allele
d)
Gene
2.
What is the probability that you would have a heterozygous offspring when crossing two homozygous dominant parents?
a)
0%
b)
25%
c)
50%
d)
33%
e)
100%
3.
Which of the following offspring genotypes are possible when crossing two heterozygous parents? Select all that apply.
a)
HH
b)
Hh
c)
hh
4.
_____________ means there are two of the same alleles and _____________ means there are one of each type of allele.
a)
Heterozygous, Genotype
b)
Heterozygous, Homozygous
c)
Genotype, Homozygous
d)
Homozygous, Heterozygous
5.
Who is considered the father of modern genetics?
a)
Gregor Mendel
b)
Albert Einstein
c)
Sir Isaac Newton
d)
Mr. Avila
6.
What potential PHENOTYPES will occur with this monohybrid cross?
a)
Tall
b)
Short
7.
What is the probability of having BROWN hair?
a)
25%
b)
0%
c)
33%
d)
50%
8.
What is the standard ratio in MENDEL genetics?
a)
3:1
b)
2:1
c)
6:7
d)
4:1
9.

What is the term for an organism with two different alleles for a trait?

a)

Phenotype

b)

Genotype

c)

Heterozygous

d)

Homozygous

10.

Which of the following best describes a recessive allele?

a)

It determines the genotype

b)

It is masked by a dominant allele

c)

It is found only in homozygous individuals

d)

It is always expressed in the phenotype

11.
If green is dominant over purple, then what is the genotype for this individual?
a)
Purple
b)
Green
c)
GG
d)
gg
12.

In cats, short hair (S) is dominant over long hair (s).

Which genotype represents a heterozygous cat?

a)

ss

b)

Ss

c)

SS

13.

Which genotype represents a homozygous dominant individual?

a)

AA

b)

Ab

c)

Aa

d)

aa

14.

What is the physical expression of a gene called?

a)

Chromosome

b)

Allele

c)

Phenotype

d)

Genotype

15.

When one allele is not dominant over another, resulting in a blended phenotype for heterozygous offspring is considered....

a)

Incomplete Dominance

b)

Codominance

16.

When one allele is not dominant over the other, resulting in both traits expressed in a heterozygous individual.....

a)

Incomplete Dominance

b)

Codominance

17.
This is an example of ___________?
a)
Incomplete dominance
b)
Co-Dominance
18.
This is an example of ___________.
a)
 Incomplete Dominance
b)
 Codominance
19.

A calico cat shows both the traits for orange fur and black fur. What kind of allele expression is this?

a)
Incomplete Dominance
b)
Co dominance

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