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Genetics Review Quiz

Total questions: 23

Worksheet time: 17mins

Name
Class
Date
1.

What is the study of inheritance and variation of traits in living organisms called?

a)

ecology

b)

genetics

c)

biology

d)

evolution

2.

What are the basic units of heredity that are passed from parents to offspring?

a)

Cells

b)

Chromosomes

c)

Traits

d)

Genes

3.

What is the term for the genetic makeup of an organism?

a)

phenotype

b)

chromosome

c)

genotype

d)

allele

4.

What is the term for the physical characteristics or traits of an organism?

a)

chromosome

b)

DNA

c)

phenotype

d)

genotype

5.

What is the term for the specific combination of alleles an organism has for a particular gene?

a)

genome

b)

alleleotype

c)

phenotype

d)

genotype

6.

What is the term for an organism that has two identical alleles for a particular gene?

a)

homozygous

b)

monogenic

c)

polygenic

d)

heterozygous

7.

What is the term for an organism that has two different alleles for a particular gene?

a)

monohybrid

b)

heterozygous

c)

diploid

d)

homozygous

8.

What is the term for the observable traits or characteristics of an organism?

a)

phenotype

b)

genotype

c)

inheritance

d)

DNA

9.

What is the term for the passing of traits from parents to offspring?

a)

heredity

b)

genetics

c)

inheritance

d)

evolution

10.
Different forms a gene may have for a trait.
a)
chromosome
b)
gene
c)
mutation
d)
allele
11.
The physical trait of an organism (ex: tall pear plant, eye color).
a)
Genotype
b)
Phenotype
12.
Two different alleles for a trait (Rr, Pp)
a)
homozygous
b)
heterozygous
13.
Two alleles that are the same (ex: RR, pp)
a)
homozygous
b)
heterozygous
14.

Homozygous Dominant

a)

AA

b)

Aa

c)

aa

d)

Not this one :)

15.

Homozygous Recessive

a)

AA

b)

Aa

c)

aa

d)

Not this one :)

16.

Heterozygous

a)

AA

b)

Aa

c)

aa

d)

Not this one :)

17.

In cacti, long arms (A) are dominant to short arms (a). A heterozygous long arm cactus is crossed with a short arm cactus. What is the parent cross?

a)

Aa x aa

b)

aa x aa

c)

Aa x AA

d)

AA x aa

18.
If T stands for tall and t stands for short, which is true of this Punnett Square?
a)
50% of the offspring are short
b)
50% of the offspring are tall
c)
100% of the offspring are tall
d)
100% of the offspring are short
19.

Objective #13

This is a pedigree that follows blue eyes which is a recessive trait. What is the genotype of the mother (circle) in generation 1?

a)

Aa

b)

AA

c)

aa

d)

A?

20.
What percentage of the female offspring will be a carrier for this recessive disease?
a)
0%
b)
50%
c)
100%
d)
25%
21.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a female who is a carrier for hemophilia?
a)
XHXh
b)
XhXh
c)
XHXH
d)
XhY
22.
Hemophilia is a recessive x-linked disorder.
Which genotype represents a male with hemophilia?
a)
XHXh
b)
XhXh
c)
XHY
d)
XhY
23.
Normal fruit flies have brownish-yellow bodies which is the dominant trait. A homozygous normal fruit fly (e+ e+) is crossed with a homozygous ebony fruit fly (ee). What is the predicted outcome of this genetic cross?
a)
all the offspring will have ebony bodies
b)
75% will have brownish-yellow bodies and 25% will have ebony bodies
c)
all the offspring will have brownish-yellow bodies
d)
75% will have ebony bodies and 25% will have brownish-yellow bodies