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Genetics vocabulary and practice

Total questions: 17

Worksheet time: 9mins

Name
Class
Date
1.

What do TT, Tt, and tt represent?

a)

Phenotype

b)

Genotype

c)

Homozygous dominant

d)

Heterozygous

2.

Which of the following is homozygous?

a)

Rr

b)

rr

c)

phenotype

d)

genotype

3.

Which of the following describes the physical trait an individual has?

a)

allele

b)

genotype

c)

phenotype

d)

pedigree

4.

What is the tool we use to show crosses between two individuals?

a)

allele

b)

genotype

c)

pedigree

d)

Punnett square

5.

Which of the following is a section of DNA that carries instructions for making a protein?

a)

gene

b)

trait

c)

phenotype

d)

allele

6.

Which of the following is a phenotype?

a)

Aa

b)

AA

c)

Tall or short

d)

a gene

7.

What describes two or more versions of a gene?

a)

phenotype

b)

heterozygous

c)

allele

d)

genotype

8.

Which of the following is homozygous dominant?

a)

Bb

b)

bb

c)

Brown

d)

BB

9.

Which phenotype does a heterozygote show in simple inheritance?

a)

the recessive phenotype

b)

a mix between the dominant and recessive phenotype

c)

the dominant phenotype

10.

Which of the following is a tool we use to show how genes or conditions move through multiple generations?

a)

pedigree

b)

Punnett square

c)

blood typing

d)

genotype

11.

What alleles does a heterozygote have?

a)

two dominant alleles

b)

one dominant and one recessive allele

c)

two recessive alleles

12.

Which of the following is an observable characteristic determined by the combination of two alleles?

a)

gene

b)

genotype

c)

trait

d)

allele

13.

Which of the following is the genotype for oval eyes if oval eyes is the recessive phenotype? (alleles being used are R and r)

a)

RR

b)

rr

c)

Rr

14.

What is the phenotype of an individual who is homozygous dominant for a long nose where the recessive phenotype is a short nose?

a)

LL

b)

long nose

c)

short nose

d)

ll

15.

If I want to find out if an individual is homozygous dominant or heterozygous, what would I cross it with?

a)

a homozygous dominant individual

b)

a heterozygous individual

c)

an individual with any genotype

d)

a homozygous recessive individual

16.

What does it mean when a person on the pedigree is shaded in?

a)

They have the trait we are looking at

b)

They do not have the trait we are looking at

c)

They are female

d)

They are male

17.

Who is person 1 to person 11?

a)

Mother

b)

Father

c)

Grandmother

d)

Grandfather