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4-21 Practice

Total questions: 12

Worksheet time: 3600secs

Name
Class
Date
1.

The different forms of a gene or trait

a)

Inherited

b)

Homozygous

c)

Acquired

d)

Alleles

2.

This allele is hidden or masked whenever the dominant allele is present

a)

Dominant allele

b)

Genes

c)

Recessive allele

3.

The traits of an organism that we can observe. They are visible.

a)

Recessive

b)

Genotype

c)

Phenotype

4.

An organism genotype that has two identical alleles (AA, aa)

a)

Homozygous

b)

Phenotype

c)

Heterozygous

5.

A person who is Homozygous Dominant will have the same characteristic (phenotype) as a

a)

Homozygous recessive person

b)

Sibling

c)

Heterozygous person

6.

The different allele combinations

a)

phenotype

b)

chromosomes

c)

genotype

7.

How many alleles you inherit for a trait? For example, eye color

a)

Only one from one parent

b)

Two, one from each parent

8.
Which of the following is homozygous recessive?
a)
rr
b)
AA
c)
TT
d)
Ff
9.

Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's genotype?

a)

BB

b)

bb

c)

Bb

10.

Mark is heterozygous. If B is for brown hair, and b is for blonde hair, what is Mark's phenotype?

a)

Brown Hair

b)

Blonde Hair

c)

Brown and Blonde Hair

11.

What are the possible children for these frogs

a)

Gg

b)

GG

c)

gg

12.

What about now? What are the possible children for these two new frogs?

a)

GG

b)

gg

c)

Gg