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Genetics and Selective Breeding

Total questions: 13

Worksheet time: 2hrs 7mins

Name
Class
Date
1.
What allele combination should go in the missing box?
a)
AA
b)
Aa
c)
aa
d)
none of these
2.
If B = brown hair and b = blonde hair, what is the probability of brown hair?
a)
25%
b)
50%
c)
0%
d)
75%
3.
In rabbits, black fur (B) is dominant over brown fur (b). If a rabbit has brown fur, what can you conclude about its genotype?
a)
It is BB.
b)
It is Bb
c)
It is brown
d)
It is bb.
4.
What percent of offspring will have the recessive trait?
a)
25
b)
50
c)
75
d)
100
5.
What is a phenotype
a)
The genetic make up (code)
b)
The physical trait
6.
Which of the following genotypes is homozygous dominant?
a)
A
b)
Aa
c)
AA
d)
aa
7.
What is the probability of homozygous dominant offspring?
a)
0%
b)
100%
c)
50%
d)
25%
8.
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%
9.

Selective breeding is...

a)

a process to create an organism with desired traits from parents with those desired traits to benefit humans

b)

natural method of producing offspring with desired traits

c)

creating a new species

d)

making organisms reproduce during times of stress

10.

An example of selective breeding is

a)

a dog breeder mating 2 dogs to make more dogs

b)

a farmer grows bees to pollinate the plants on his farm

c)

a person pollinates 2 white rose plants to only create white roses

11.

Problems with selective breeding include

a)

Better animals

b)

Increased meat production

c)

Animals can have bad health problems

d)

more diversity

12.

Which is NOT a result of selective breeding?

a)

Large seedless watermelons that consumer demand

b)

Bright oranges that are all about the same size

c)

An insect that matches the color of the environment

d)

A dog that has been bred to have short hair

13.

The purpose of selective breeding is to

a)

get bigger animals

b)

get smaller animals

c)

create animals with desirable traits

d)

create animals with bad traits