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How Do Genes Combine In Offspring?

Total questions: 12

Worksheet time: 16mins

Name
Class
Date
1.
Which term correctly describes an individual with a pair of the same alleles for a trait? 
a)
homologous
b)
heterozygous
c)
homozygous
d)
heterologus
2.
 An individual with two different alleles for a specific trait is said to be _____________.
a)
homozygous
b)
heterogenous
c)
homogenous
d)
heterozygous
3.
Of 12 hamsters just born, 9 have brown fur and 3 have white fur. The trait for white fur is considered to be ________.
a)
recessive
b)
weak
c)
strong
d)
dominant
4.
 Gregor Mendel developed some basic principles of heredity by ______________.
a)
breeding fruit flies
b)
cutting off the tails of mice
c)
crossing pea plants
d)
growing bacteria in a laboratory
5.

Many mutations...

a)

Occur randomly

b)

Occur because of bad eating habits

c)

Occur because of lack of exercise

6.

Long strands of DNA that contain lots of genes

a)

variation

b)

inherited trait

c)

gene

d)

chromosome

e)

allele

7.

A characteristic passed from parent to offspring

a)

variation

b)

inherited trait

c)

gene

d)

chromosome

e)

allele

8.

Humans inherit traits from their __________.

a)

uncles/aunts

b)

identical

c)

siblings

d)

recessive

e)

parents

9.

When one parent is pure dominant and the other parent is pure recessive, their offspring are all heterozygous _______________.

a)

recessive

b)

dominant

10.

The recessive gene for blue eye color in humans is shown by the symbol ________________.

a)

Lower case 'b'

b)

Upper case 'B'

11.

How many of the offspring will be black?

a)

25%

b)

50%

c)

100%

12.

You can use ______________ to predict the

eye color of the offspring.

a)

gene symbols

b)

punnett Squares

c)

predicting trait