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Worksheets

genetics

Total questions: 20

Worksheet time: 11mins

Name
Class
Date
1.

Which of the following is homozygous recessive

a)

Rr

b)

RR

c)

rr

d)

all of them

2.

Which term describes the different forms of a gene

a)

Chromosome

b)

Allele

c)

DNA

d)

Punnett Squares

3.

This image shows a_____

a)

Punnett Squre

b)

PHenotype

c)

Pedigree

d)

Homozygous Dominate genotype

4.

A phenotype is

a)

Dominance

b)

Physical appearance

c)

Recessiveness

d)

Letter Combinations

5.

What is an allele?

a)

A gene

b)

A genotype

c)

A phenotype

d)

Different forms of a gene

6.

Having two of the same genes for the same trait

a)

heterozygous

b)

chromosome

c)

protein

d)

homozygous

7.

Which of the following is a phenotype

a)

bb

b)

Bb

c)

BB

d)

blue eyes

8.

Having two different genes for a trait is called

a)

homozygous

b)

heterozygous

c)

protein

d)

genotype

9.

Which of the following genotypes would be considered heterozygous?

a)

BB

b)

gg

c)

Ff

d)

TT

10.

Aa, DD, Bb, yy are all examples of _______

a)

genotypes

b)

phenotypes

11.

If something is heterozygous, it is also _____

a)

purebred

b)

hybrid

c)

dominant

d)

recessive

12.

If something is homozygous, it can also be called____

a)

phenotype

b)

genotype

c)

hybrid

d)

purebred

13.
Genotype refers to the ...
a)
physical expression of the genes
b)
the possible combination of alleles in a gene
c)
whether an allele is dominant or recessive
d)
how an organism will appear
14.
An offspring will receive how many alleles from each parent to determine a specific trait?
a)
one
b)
two
c)
three
d)
five
15.
Which of the following is a phenotype?
a)
BB
b)
Bb
c)
bb
d)
Blue eyes
16.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
17.
the passing of genetic traits from parent to offspring.
a)
heredity
b)
trait
c)
gene
d)
allele
18.
having two of the same genes for the trait (sometimes called purebred).
a)
homozygous
b)
hetrozygous
c)
protein
d)
chromosome
19.
having two different genes for a trait (sometimes called hybrid).
a)
protein
b)
homozygous
c)
heterozygous
d)
genotype
20.
Two brown eyed parents (Bb) have a baby. What is the chance the baby is blue eyed?
a)
0 %
b)
25%
c)
50%
d)
75%