Free Printable Types of Genetic Problems

1.

In a simple monohybrid cross, like a heterozygous green crosses with a homozygous green, the genotypes for the offspring could be

a)

25% GG, 25% Gg, and 50% gg

b)

25% green and 75% yellow

c)

50% GG and 50% Gg

d)

all green peas

2.

In a simple monohybrid cross, like a heterozygous green crosses with a homozygous green, the phenotypes for the offspring could be

a)

75% green and 25% yellow peas

b)

50% green and 50% yellow

c)

all 100% green peas

d)

50% GG and 50% Gg

3.

If two parents are heterozygous for being tall, then the parents genotypes are

a)

TT

b)

Tt

c)

tt

4.

Monohybrid means that there is

a)

only one trait in the cross

b)

there are two traits in the cross

c)

there is a mixed of one type of plant

5.

From the Dihybrid Problems, a heterozygous running, heterozygous black mouse would have the following genotype?

a)

Rr BB

b)

Rr Bb

c)

rr BB

d)

RR Bb

6.

The possible gametes for the heterozygous running, heterozygous black mouse parents could be which of the following (select all that apply- FOIL METHOD REMEMBER)

a)

RB

b)

Rb

c)

rB

d)

rb

e)

rr

7.

Dihybrid Crosses helped Gregor Mendel develop the Law of ...?

a)

Law of Segregation

b)

Law of Probability

c)

Law of Independent Assortment

d)

No laws were developed

8.

Cross a homozygous running homozygous black mouse with a heterozygous running, brown mouse. The parents genotypes are:

a)

RR BB X Rr bb

b)

Rr Bb X Rr bb

c)

RR BB X RR bb

d)

RR BB X Rr Bb

9.

Cross a homozygous running homozygous black mouse with a heterozygous running, brown mouse. The phenotypes of the offspring would be

a)

all waltzing and black mice

b)

all running and black mice

c)

all running and brown mice

d)

all waltzing and brown mice

10.

Incomplete Dominance: In some cats the gene for tail length shows incomplete dominance. Cats with long tails and cats with no tails are homozygous for their respective alleles. Cats with one long tail allele and one no tail allele have short tails.

Cross a long tail cat and a cat with no tail and determine the genotype for the offspring

a)

100% long tails

b)

100 % LN

c)

100% short tails

d)

I have no idea

11.

Incomplete Dominance: In some cats the gene for tail length shows incomplete dominance. Cats with long tails and cats with no tails are homozygous for their respective alleles. Cats with one long tail allele and one no tail allele have short tails.Cross a long tail cat and a cat with no tail and determine the phenotype for the offspring

a)

100% long tails

b)

100% short tails

c)

100% no tails

d)

I have no idea

12.

Incomplete Dominance: In some cats the gene for tail length shows incomplete dominance. Cats with long tails and cats with no tails are homozygous for their respective alleles. Cats with one long tail allele and one no tail allele have short tails.Cross a short tail cat and a short cat and determine the genotype for the offspring

a)

25% LL, 50% LN, 25% NN

b)

50% LL, 50% LN

c)

25% LL, 25% LN, 50% NN

d)

25% long tails, 50% short tails, and 25% no tails

13.

Incomplete Dominance is when neither of the allele is dominant, so the alleles

a)

will blend the traits

b)

will both be expressed

c)

will express the dominant trait only

d)

no idea

14.

Co-Domiance: In some cattle the genes for brown hair (B) and for white hair (W) are co-dominant. Cattle with alleles for both brown and white hair, have both brown and white hairs (but they do not blend to make tan). This condition gives the cattle a reddish color, and is referred to as Roan (BW).

Cross a roan bull and a white cow. Determine the genotypes of the parents

a)

Bull is RR, Cow is WW

b)

Bull is RW, Cow is RW

c)

Bull is RW, Cow is WW

d)

Bull is RR, Cow is RR

15.

Codominance is when neither of the allele is dominant, so the alleles

a)

blend and mix

b)

are both expressed

c)

only express the dominant allele

d)

I have no idea

Types of Genetic Problems

Total questions: 15

Worksheet time: 14mins

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