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Mendelian Genetics

Total questions: 10

Worksheet time: 6mins

Name
Class
Date
1.

What is the genotype for the blood type O?

a)

Ai

b)

ii

c)

BB

d)

AB

2.

Which of the following is an example of a homozygous recessive genotype?

a)

RR

b)

Rr

c)

rr

d)

None of the above

3.

Assuming that both parent plants in the diagram above are homozygous, why would all of the f1 generation have yellow phenotypes?

a)

because the f1 genotypes are homozygous

b)

because yellow is dominant over green

c)

because both parents passed on yellow alleles

4.

If you crossed two heterozygous plants, how many of the offspring will also be heterozygous?

a)

all

b)

half

c)

3/4

d)

1/4

5.

What is the genotype for this organism?

(E= 3 eyes, e= 1 eye)

a)

ee

b)

EE

c)

Ee

d)

EE or Ee

6.

In the diagram above, what accounts for the green pea seed in the f2 generation?

a)

The f1 generation parents are heterozygous.

b)

The yellow allele is dominant over the green one.

c)

The f1 generation parents are homozygous yellow.

7.

A _______ is an alternative form a gene.

a)

chromosome

b)

sister chromatid

c)

allele

d)

telomere

8.

a trait that is masked unless 2 copies are present is ________________________

a)

recessive

b)

dominant

c)

weak

d)

hidden

9.

the physical/observable characteristic

a)

phenotype

b)

genotype

10.

the organism's genetic makeup

a)

phenotype

b)

genotype