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Genetics Part 1 Review

Total questions: 12

Worksheet time: 6mins

Name
Class
Date
1.

Select the heterozygous genotype

a)

BB

b)

Bb

c)

bb

2.

If a heterozygous round pea is crossed with a wrinkled one, which phenotype is dominant?

a)

Round

b)

Wrinkled

c)

RR

d)

rr

3.

An alternative form of a gene can be defined as a/an

a)

Allele

b)

Gene

c)

Homologous Chromosome

d)

Mutation

4.

Which of the following if a recessive genotype?

a)

RR

b)

Rr

c)

rr

d)

white flowers

5.

If two heterozygous organisms are crossed, what is the probability that they will have a recessive offspring?

a)

100%

b)

50%

c)

25%

d)

0%

6.

Which of Mendel's laws says that one allele will mask the appearance of another

a)

Law of segregation

b)

Law of Independent Assortment

c)

Law of Dominance

7.

Out of the two alleles that are present, only one is present in the gamete describes Mendel's Law of

a)

Dominance

b)

Segregation

c)

Independent Assortment

8.

What was Mendel's conclusion after his experimentation with pea plants

a)

We are not a blend of our parents

b)

We are a blend of our parents

c)

We receive multiple alleles from each parent

d)

Alleles assort together

9.

Choose the homozygous dominant genotype

a)

DD

b)

Dd

c)

dd

10.

True or False, when an organism receives a recessive allele from a parent, that parent must have the recessive trait

a)

True

b)

False

11.

If you have an organism with the dominant phenotype, what can you do to determine its genotype?

a)

testbreed

b)

monocross

c)

punnetcross

d)

testcross

12.

If you perform a test cross and all of the organisms in the F1 generation display the domiant trait, what was the genotype of the original?

a)

Homozygous Dominant

b)

Heterozygous