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introduction to genetics allele practice

Total questions: 19

Worksheet time: 10mins

Name
Class
Date
1.

ID the alleles

Homozygous dominant

a)

Bb

b)

bb

c)

BB

d)

not enough information

2.

ID the alleles

homozygous recessive

a)

Bb

b)

bb

c)

BB

d)

not enough information

3.

in meiosis haploid cells created carry ________ copy of each gene

a)

2

b)

1

c)

4

d)

3

4.

ID the alleles

Heterozygous

a)

bb

b)

Aa

c)

DD

d)

not enough information

5.

ID the alleles

Homozygous dominant

a)

aa

b)

AA

c)

Aa

d)

not enough information

6.

ID the alleles

Homozygous recessive

a)

DD

b)

Dd

c)

dd

d)

not enough information

7.

Aa

a)

homozygous recessive

b)

homozygous dominant

c)

heterozygous

d)

homozygous

8.

AA

a)

homozygous recessive

b)

homozygous dominant

c)

heterozygous

d)

homozygous

9.

ff

a)

homozygous recessive

b)

homozygous dominant

c)

heterozygous

d)

homozygous

10.

different variation of a gene

a)

chromosome

b)

chromatid

c)

allele

d)

homozygous

11.

Which of the following best describes a genotype?

a)

The process of cell division

b)

The environment an organism lives in

c)

The genetic makeup of an organism

d)

The physical appearance of an organism

12.

ID the alleles

Homozygous

a)

Dd

b)

BB

c)

dd

d)

not enough information

13.

What is the term for a segment of DNA that codes for a specific protein?

a)

Gene

b)

Genome

c)

Chromosome

d)

Allele

14.

dominant genes are shown with

a)

lowercase letter

b)

capital letter

c)

number

d)

( parenthesis )

15.

What is the term for the physical expression of a gene?

a)

Chromosome

b)

Phenotype

c)

Genotype

d)

Allele

16.

ID the alleles

Homozygous

a)

ee

b)

not enough information

c)

Ee

d)

EE

17.

recessive genes are shown with

a)

lowercase letter

b)

capital letter

c)

number

d)

( parenthesis )

18.

ID the alleles

Heterozygous

a)

Bb

b)

bb

c)

BB

d)

not enough information

19.

What is the % of heterozygous

a)

0%

b)

25%

c)

50%

d)

75%