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Worksheets

Genetic Terms

Total questions: 12

Worksheet time: 7mins

Name
Class
Date
1.

Which of the following is homozygous recessive?

a)

Rr

b)

RR

c)

rr

d)

All of them

2.

Brown (B) is dominant over white (b). Which is a homozygous GENOTYPE of BROWN FUR?

a)

BB

b)

Bb

c)

bb

d)

B

3.

Which term describes the different forms of a gene?

a)

Chromosome

b)

Allele

c)

DNA

d)

Punnett Squares

4.

This image shows a

a)

Phenotype

b)

Punnett Square

c)

Homozygous Dominant gentotype

d)

Pedigree

5.

What does a Punnett Square do?

a)

Show the possible genotypes

b)

Determine the possible phenotypes

c)

Predict offspring traits

d)

All of the above

6.

A phenotype is

a)

Physical appearence

b)

Dominance

c)

Recessiveness

d)

Letter combinatons

7.

What is a gene?

a)

They cause disease

b)

What you wear to parties

c)

The basic building blocks of heredity

d)

It is what DNA is made up of

8.

What is an allele?

a)

A gene

b)

A genotype

c)

A phenotype

d)

Different forms of a gene

9.

Which of the following matches this description of a chromosome?

a)

Different forms of a gene

b)

Threadlike structures made of DNA molecules that contain the genes

c)

A complex molecule containing the genetic information that makes up the chromosomes.

d)

A segment of DNA on a chromosome that codes for a specific trait

10.

What is the name for a chart that tracks the traits in a family?

a)

Punnett Square

b)

Pedigree

c)

Locus

d)

Mitosis

11.

Which process results in cells with half the cell's chromosomes combining to form a new cell?

a)

Mitosis

b)

Meiosis

c)

Autosomes

d)

Fertilisation

12.

Chromosomes, other than sex chromosomes are called...

a)

Gametes

b)

Autosomes

c)

Sex chromsomes

d)

Sex cells