Wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Intro Genetics Vocab Concept Practice

Total questions: 11

Worksheet time: 22mins

Name
Class
Date
1.

Calculate the probability of getting (Rr) offspring in this Punnett square.

a)

0:4, 0/4, 0%

b)

1:3, 1/4, 25%

c)

2:2, 2/4, 50%

d)

3:1, 3/4, 75%

e)

4:0, 4/4, 100%

2.

In rabbits, the allele B for black hair is dominant over the allele b for brown hair. Calculate the probability of homozygous dominant (BB) offspring resulting from a cross between two heterozygous (Bb) parents

a)

0:4, 0/4, 0%

b)

1:3, 1/4, 25%

c)

2:2, 2/4, 50%

d)

3:1, 3/4, 75%,

e)

4:0, 4/4, 100%,

3.

In rabbits, the allele B for black hair is dominant over the allele b for brown hair. Calculate the probability of heterozygous offspring resulting from a cross between a heterozygous parent and a homozygous recessive (bb) parent

a)

0:4, 0/4, 0%

b)

1:3, 1/4, 25%

c)

2:2, 2/4, 50%

d)

3:1, 3/4, 75%

e)

4:0, 4/4, 100%

4.

In rabbits, the allele B for black hair is dominant over the allele b for brown hair. Calculate the probability of heterozygous offspring resulting from a cross between a homozygous dominant parent and a homozygous recessive parent.

a)

0:4, 0/4, 0%

b)

1:3, 1/4, 25%

c)

2:2, 2/4, 50%

d)

3:1, 3/4, 75%

e)

4:0, 4/4, 100%

5.

In rabbits, the allele B for black hair is dominant over the allele b for brown hair. Calculate the probability of homozygous dominant offspring from a cross between a heterozygous parent and a homozygous recessive parent

a)

0:4, 0/4, 0%

b)

1:3, 1/4, 25%

c)

2:2, 2/4, 50%

d)

3:1, 3/4, 75%

e)

4:0, 4/4, 100%

6.

If the offspring of a recessive parent all have the dominant trait, then the genotype of the other parent being tested is

a)

homozygous recessive

b)

homozygous dominant

c)

heterozygous

d)

Both A & B

7.

If some of the offspring in a test cross show the recessive trait but not all, then the genotypes of the individuals being tested are

a)

homozygous recessive

b)

homozygous dominant

c)

heterozygous

d)

Both A & B

8.

If you want to determine if an individual with a dominant phenotype is heterozygous or homozygous for a trait, you always cross the individual with a _____________________ individual.

a)

homozygous recessive

b)

homozygous dominant

c)

heterozygous

d)

All possibilities can prove this true

9.

The percent of homozygous recessive offspring resulting from a cross between two homozygous dominant individuals is

a)

100%

b)

75%

c)

50%

d)

25%

e)

0%

10.

The fraction of heterozygous offspring resulting from a cross between two heterozygous individuals is

a)

0/4

b)

1/4

c)

2/4

d)

3/4

e)

4/4

11.

What are the odds (ratio) that a gamete (“kid”) from a plant with a Tt genotype will get a t allele is

a)

0:2

b)

1:1

c)

2:0

d)

I don't understand ratios.