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Mendelian Genetics

Total questions: 10

Worksheet time: 11mins

Name
Class
Date
1.

Who is known as the "father of genetics"?

a)

Charles Darwin

b)

Karl Ernst von Baer

c)

Gregor Mendel

d)

Francis Franklin

2.

Alleles (example: H or h) are alternative forms of a gene. How many alleles does a baby guinea pig inherit from their mother?

a)

1

b)

2

c)

23

d)

whichever one is dominant

3.

Cross 2 heterozygous tall pea plants. Tall (T) is dominant to short (t). What fraction of the offspring do you predict will be tall?

a)

1/4

b)

2/4

c)

3/4

d)

4/4

4.
What did Mendel call the two kinds of traits exhibited by the pea plants (one coming from the father, one from the mother)?
a)
Genesis
b)
Elective traits
c)
Alleles
d)
Quadrants
5.
If a pea plant were homozygous recessive for height, how would its alleles be represented?
a)
TT
b)
Tt
c)
tt
d)
tT
6.
Gregor Mendel's "P" generation consisted of purple flower plants crossed with white flower plants. What were the results of this cross?
a)
All purple flower offspring
b)
All white flower offspring
c)
Some purple flowers and some white flowers
7.
The letters on the TOP AND SIDE of a punnett square represent ______________.
a)
The combination of alleles in offspring.
b)
The possible alleles given by the parents following meiosis.
c)
The genotype and phenotype of offspring.
d)
The results of genetic mutations in offspring.
8.

What is the predicted percentage of homozygous recessive offspring in this cross?

a)

0%

b)

25%

c)

50%

d)

75%

9.

Which of the following is correct?

a)

Yy is homozygous dominant.

b)

YY is heterozygous.

c)

yy is homozygous recessive.

d)

YY is homozygous recessive.

10.

Which of the following best describes Mendel's law of dominance?

a)

When an organism has two different alleles of the same gene, both genes will be expressed equally.

b)

When an organism has two alleles, one of genes will be expressed and the other will be hidden.

c)

When an organism has two different alleles of the same gene, one will always be dominant.

d)

The stronger of the two genes will be expressed.