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Genetics Review

Total questions: 20

Worksheet time: 15mins

Name
Class
Date
1.
What is the genotype of offsrping 1?
a)
TtT
b)
Tt
c)
tt
d)
TT
2.
If you cross a white flower (genotype pp) with a purple flower (gentype PP) the possible genotypes for the offspring are
a)
all pp
b)
all PP
c)
all Pp
d)
either PP or pp
3.

When a true-breeding (homozygous) plant self-pollinates,

a)

the daughter plant is a mutation of the parent plant.

b)

it will always produce offspring with the same traits as the parent.

c)

it will never produce offspring with the same traits as the parent plant.

d)

it will occasionally produce offspring with the same traits as the parent.

4.
The offspring in square 3 have which genotype?
a)
Tt
b)
TtT
c)
tt
d)
TT
5.
The offspring in square 2 have which genotype?
a)
tt
b)
TtT
c)
Tt
d)
TT
6.
The offspring in square 4 have which genotype?
a)
TT
b)
Tt
c)
TtT
d)
tt
7.
If the trait for being tall (T) is dominate to being short (t), the offspring from which square will be short?
a)
square 1
b)
square 4
c)
all offspring will be short
d)
all offspring will be tall
8.

The passing on of traits from parent to offspring is called

a)

development

b)

homeostasis

c)

heredity

d)

metabolism

9.

Different versions of the same gene are known as...

a)
genotype
b)
binomial
c)
sex cells
d)
alleles
10.

If the trait being studied is recessive, what is the genotype of individual I-1?

a)
rr
b)
Rr
c)
RR
d)
Round
11.
How is individual III-12 related to I-2?
a)
I-2 is the grandmother of III-12
b)
I-2 is the grandfather of III-12
c)
III-12 is the son of I-2
d)
III-12 is the brother of I-2
12.
How many individuals in generation III display the trait?
a)
1
b)
2
c)
3
d)
4
13.
How many copies of a recessive allele does one need to display the trait?
a)
1
b)
2
c)
3
d)
0
14.

Which of the following represents a genotype for someone who is heterozygous?

a)
Yy
b)
YY
c)
yy
d)
YyY
15.
What molecule serves as the basis of hereditary information?
a)
DNA
b)
Protein
c)
Carbohydrates
d)
Water
16.

Many genes are found on a...

a)

cell wall

b)

chromosome

c)

hormone

d)

vitamin

17.

Compared to the amount of genetic information contained in a typical human body cell, the amount contained in a typical gamete is...

a)

the same

b)

twice as much

c)

one-half as much

d)

one-forth as much

18.

A change in an organism's DNA, leading to variation in a species, is called

a)

a mutation

b)

an infection

c)

selective breeding

d)

sexual reproduction

19.

What is the primary advantage of sexual reproduction over asexual reproduction?

a)

Sexual reproduction creates variation.

b)

Sexual reproduction is faster then asexual reproduction.

c)

Sexual reproduction does not require investing energy into finding a mate.

d)

Sexual reproduction produces offspring that are genetically identical to the parent.

20.

In sexual reproduction, what percentage of the offspring's genetic material comes from the male parent?

a)

25%

b)

50%

c)

75%

d)

100%