wayground logo

Free Printable Worksheets

Font size

S
M
L
XL
Worksheets

Genetics Practice

Total questions: 17

Worksheet time: 34mins

Name
Class
Date
1.

The physical features of a genes as shown in the picture is called -

a)

genotype

b)

phenotype

c)

allele

2.

The 2 letter combination or an organism's genetic makeup is called -

a)

genotype

b)

phenotype

c)

allele

3.

Different forms of a gene (capital and lower case letters) are called -

a)

genotype

b)

phenotype

c)

allele

4.

Organisms receive genetic information from -

a)

only their mother

b)

only their father

c)

both parents

5.

Capital letters are used to show that an allele is -

a)

dominant

b)

recessive

c)

neither

6.

Lower case letters are used to show that an allele is -

a)

dominant

b)

recessive

c)

neither

7.

Kevin has dimples, but his gene combination shows up as Dd. This letter combination is called-

a)

genotype

b)

phenotype

c)

allele

8.

Kevin has dimples which is a stronger allele. His physical trait of dimples is called-

a)

genotype

b)

phenotype

c)

allele

9.

Kevin has dimples which is a stronger allele that takes over when it is present. This allele is-

a)

dominant

b)

recessive

c)

neither dominant or recessive

10.

If having dimples is the stronger allele, then not having dimples is the weaker allele. What type of alleles are weaker?

a)

dominant

b)

recessive

c)

neither dominant or recessive

11.

Rebecca has dimples which is a dominant gene. What would her genotype look like? (hint there may be more than one answer)

a)

DD (2 uppercase letters)

b)

dd (2 lowercase letters)

c)

Dd (1 uppercase, 1 lowercase)

12.

Casey has blue eyes, but her gene combination shows up as bb. This letter combination is called-

a)

genotype

b)

phenotype

c)

allele

13.

Casey has blue eyes which is a weaker allele. Her physical trait of blue eyes is called-

a)

genotype

b)

phenotype

c)

allele

14.

Casey has blue eyes which is a weaker allele. This allele considered to be -

a)

dominant

b)

recessive

c)

neither dominant or recessive

15.

If having blue eyes is the weaker allele, then having brown eyes is the stronger allele. What type of alleles are stronger?

a)

dominant

b)

recessive

c)

neither dominant or recessive

16.

Mrs. Robinson has blue eyes which is a recessive gene. What would her genotype look like?

a)

BB (2 uppercase letters)

b)

bb (2 lowercase letters)

c)

Bb (1 uppercase, 1 lowercase)

17.

Mrs. S has brown eyes which is a dominant gene. What would her genotype look like? (hint there may be more than one answer)

a)

BB (2 uppercase letters)

b)

bb (2 lowercase letters)

c)

Bb (1 uppercase, 1 lowercase)