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Worksheets

Heredity

Total questions: 14

Worksheet time: 14mins

Name
Class
Date
1.

The passing of traits from parents to offspring

a)

heredity

b)

atoms

c)

molecules

2.

Different version of genes are called

a)

Proteins

b)

Enzymes

c)

Atoms

d)

Alleles

3.

This trait is physically seen in an organism even if ONLY 1 copy is present

a)

allele

b)

recessive allele

c)

dominant allele

d)

genotype

4.

This trait is NOT physically seen in the phenotype if the dominant allele is present

a)

allele

b)

recessive allele

c)

dominant allele

d)

genotype

5.

This chart shows all the possible combinations of alleles that can results from a genetic cross. This is called a/an

a)

dominant allele

b)

recessive allele

c)

punnett square

d)

mitosis

6.

The mathematical chance than an event will occur is called

a)

accident

b)

probability

7.

An organism's physical appearance or visible traits (what it looks like)

a)

genotype

b)

phenotype

8.

An organism's genetic makeup, or allele combination. The letters we use to show the allele combination

a)

Genotype

b)

Phenotype

9.

When an organism has 2 identical/2 of the same alleles for a gene. For example, HH or hh

Or 2 alleles for the SAME color hair

a)

Homozygous

b)

Heterozygous

10.

An organism has 2 different alleles for a gene. For example, Hh or

1 allele for blonde hair & 1 allele for black hair

a)

Homozygous

b)

Heterozygous

11.

B is the allele for brown fur & b is the allele for white fur.

In the Punnett square, what is the probability the offspring will have white fur?

a)

25%

b)

50%

c)

75%

d)

100%

12.

B is the allele for brown fur & b is the allele for white fur.

In the Punnett square, what is the probability the offspring will have brown fur?

a)

25%

b)

50%

c)

75%

d)

100%

13.

H is the allele for black hair & h is the allele for blonde hair. Based on the punnett square, what is the probability the offspring with have black hair?

a)

0%

b)

25%

c)

50%

d)

100%

14.

H is the allele for black hair & h is the allele for blonde hair. Based on the punnett square, what is the probability the offspring with have blond hair?

a)

0%

b)

25%

c)

50%

d)

100%