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WorksheetsGenetics Test Review
Total questions: 19
Worksheet time: 11mins
Name
Class
Date
1.
Describe the cells made in meiosis.
a)
4 cells; identical; diploid
b)
4 cells; unique; haploid
c)
2 cells; identical; diploid
d)
2 cells; unique; haploid
2.
What cells in the body do what type of cell division?
a)
all cells undergo both mitosis and meiosis
b)
all cells undergo mitosis; none undergo meiosis
c)
all cells undergo meiosis; none undergo mitosis
d)
most cells undergo mitosis; sex cells undergo meiosis
3.
When making sex cells during meiosis, what happens to PAIRED chromosomes? The paired chromosomes....
a)
separate randomly into separate daughter cells
b)
move together into the daughter cells
c)
are affected by mutations in the same way
d)
join together
4.
What type of cell does mitosis occur in?
a)
sex cell
b)
body cell
c)
germ cell
d)
gamete
5.
If a body cell contains 10 chromosomes and then undergoes normal cell division. How many chromosomes will be contained in a body daughter cell?
a)
2.5
b)
5
c)
10
d)
20
6.
How many chromosomes are in a gamete?
a)
Twice as many as a body cell
b)
The same amount as a body cell
c)
1/4 the amount as a body cell
d)
Half as many as a body cell
7.
A person has an allele for short height and an allele for tall height. What are the chances that this person will produce a sex cell that contains the allele for tall?
a)
25%
b)
50%
c)
75%
d)
100%
8.
Which of the following answer choices shows heterozygous for brown eyes?
a)
bb
b)
BB
c)
Gg
d)
Bb
9.
Which of the following answer choices shows homozygous dominant for brown eyes?
a)
bb
b)
BB
c)
Gg
d)
Bb
10.
Which of the following answer choices shows homozygous recessive for blue eyes?
a)
bb
b)
BB
c)
Gg
d)
Bb
11.
The cells coming together in fertilization are ___________and the final product is ____________.
a)
diploid; diploid
b)
diploid; haploid
c)
haploid; diploid
d)
haploid; haploid
12.
If the sperm and egg cells EACH contain 12 chromosomes, how many chromosomes would a zygote contain?
a)
12
b)
6
c)
24
d)
36
13.
Who determines the gender of a boy?
a)
Boys receive a Y chromosome from mom; X from dad
b)
Boys receive an X chromosome from mom and dad
c)
Boys receive a Y chromosome from mom and dad
d)
Boys receive an X chromosome from mom; Y from dad
14.
What is heredity?
a)
traits passed down from parents to offspring during meiosis
b)
traits passed down from parents to offspring during mitosis
c)
traits passed down through the blood of the mother during pregnancy
d)
traits passed during protein translation
15.
What DOESN'T cause genetic variation?
a)
crossing over in meiosis
b)
protein synthesis
c)
errors in DNA replication
d)
mutations
16.
What is a genotype?
a)
The physical expression of a trait
b)
Part of a gene
c)
double helix
d)
All of an organism's genes
17.
What is an allele?
a)
different forms of a gene
b)
all of an organism's genes
c)
physical expression of a trait
d)
double helix
18.
What happens during crossing over?
a)
the mixing of chromosomes, which has no effect on genetic variation
b)
the mixing of chromosomes, which reduces genetic variation
c)
whole chromosomes are exchanged which increases genetic variation
d)
alleles are exchanged which increases genetic variation
19.
What is a mutation?
a)
always beneficial
b)
always harmful
c)
scientists change DNA
d)
random change in DNA
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