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DNA & Genetics Practice Test

Total questions: 54

Worksheet time: 48mins

Name
Class
Date
1.
Structure B is pointing to the _____. 
a)
chromosome
b)
centromere
c)
DNA
d)
chromatid
2.
Structure C is pointing to one ____. 
a)
sister chromatid
b)
chromosome
c)
centromere
d)
gene
3.

How many chromosomes are normally found in human body cells?

a)

46

b)

23

c)

26

d)

44

4.
Identify the phase of mitosis.
a)
prophase
b)
metaphase
c)
anaphase
d)
telophase
5.
Which phase comes NEXT?
a)
prophase
b)
metaphase
c)
anaphase
d)
telophase
6.
a)
Prophase
b)
Interphase
c)
Anaphase
d)
Telophase
7.
a)
Anaphase
b)
Cytokinesis
c)
Telophase
d)
Metaphase
8.
a)
Cytokinesis
b)
Interphase
c)
Anaphase
d)
Metaphase
9.
a)
Anaphase
b)
Cytonkinesis
c)
Interphase
d)
Prophase
10.
a)
Cytokinesis
b)
Anaphase
c)
Telophase
d)
Prophase
11.

In which cell below would a student likely observe a cell plate during mitosis?

a)

rat muscle cell

b)

alligator stomach cell

c)

onion root cell

d)

human lung cell

12.
Chromatid pairs line up in the middle of the cell.
a)
Metaphase
b)
Telophase
c)
Anaphase
d)
Interphase
13.
Chromatid pairs separate and move to opposite ends of the cell
a)
Metaphase
b)
Telophase
c)
Interphase
d)
Anaphase
14.
Chromosomes duplicate, the cell grows and develops
a)
Metaphase
b)
Telophase
c)
Interphase
d)
Anaphase
15.
Results of cell division or mitosis include all of the following EXCEPT?
a)
growth
b)
repair damaged cells
c)
replace damaged cells
d)
dead cells
16.
Chromatid pairs can be seen, spindle fibers form and nuclear membrane disappears
a)
Metaphase
b)
Telophase
c)
Anaphase
d)
Prophase
17.
Two new nuclei form and the cytoplasm splits
a)
Metaphase 
b)
Telophase
c)
Anaphase
d)
Prophase
18.
How many chromosomes does a human cell have?
a)
42
b)
46
c)
24
d)
64
19.
Which of the following lists, in order, the phases of mitosis?
a)
interphase, metaphase, anaphase, telophase
b)
prophase, metaphase, anaphase, telophase
c)
prophase, metaphase, anaphase, interphase
d)
prophase, anaphase, metaphase, telophase
20.
Cells spend 90% of their time in this stage of the cell cycle. This is the reason you would see most cells in this stage if viewed under a microscope.
a)
Prophase
b)
Metaphase
c)
Anaphase
d)
Interphase
21.
Cell division occurs to allow for 
a)
Growth
b)
Reproduction
c)
Repair
d)
All of the above
22.
What kind of cells are made in MEIOSIS?
a)
Haploid cells
b)
Diploid Cells
c)
Skin Cells
d)
Liver Cells
23.
Crossing over creates
a)
male genotype
b)
genetic variation (differences)
c)
DNA replication
d)
mitosis
24.
Which cellular process is shown?
a)
meiosis
b)
endocytosis
c)
mitosis
d)
phagocytosis
25.
Which of the following best describes meiosis?
a)
It is carried out in all tissues theat require cell replacement
b)
It occurs only in cells in the reproductive structures of an organism
c)
It happens in all of the tissues except the brain and spinal cord
d)
It is the first stage of mitosis
26.
Meiosis makes sperm and egg cells. In humans, sperm and egg cells each have _____ chromosomes. Therefore a fertilized human egg cell (sperm and egg cell combined) would create a cell with _____ chromosomes.
a)
23, 46
b)
46, 23
c)
2, 4
d)
50, 100
27.
How many daughter cells does Meiosis create?
a)
2
b)
4
c)
8
d)
1
28.
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
29.
What do we call the result of the genotype (for example, the color of the peas)?
a)
Visible traits
b)
Physiotrait
c)
Genotype 2
d)
Phenotype
30.

What is the study of heredity?

a)

Genetics

b)

Genealogy

c)

Cytology

d)

Fertilization

31.

What plant did Mendel use to study genetics?

a)

peas

b)

corn

c)

flowers

d)

apricots

32.

Who is the Father of Genetics?

a)

James Watson

b)

Gregor Mendel

c)

Francis Crick

d)

Jay Turner

33.
In pea plants, the tall allele is dominant to the short allele. What key would demonstrate this?
a)
Tall = T
Short = S
b)
Tall = T
Short = t
c)
Tall = t
Short = T
d)
Tall = TT
Short = tt
34.
Identify the homozygous dominant genotype:
a)
FF
b)
Ff
c)
ff
35.
What phenotype would result from crossing a homozygous dominant purple-flowered pea plant with a homozygous recessive white-flowered pea plant?
a)
Pp
b)
Purple
c)
White
d)
PP and pp
36.

What are the possible phenotype(s) of the offspring? (A-Brown hair; a-blond hair)

a)

50 % Brown Hair and 50% Blond Hair

b)

25 % Brown Hair and 75% Blond Hair

c)

75 % Brown Hair and 25% Blond Hair

d)

0% Brown Hair and 100% Blond Hair

37.
What is the yellow seed genotype?
a)
aa
b)
Aa
c)
AA
d)
AA or Aa
38.
What genotype would go in box 2?
a)
BB
b)
Bb
c)
bb
39.

an observable characteristic

a)

trait

b)

gene

c)

allele

d)

DNA

40.

A version or variation of a gene

a)

trait

b)

gene

c)

allele

d)

DNA

41.

The observable expression of a trait

a)

phenotype

b)

genotype

c)

chromosome

d)

allele

42.

The alleles that an organism has

a)

genotype

b)

phenotype

c)

chromosome

d)

recessive

43.

When an organism has two of the same alleles, it is called

a)

homozygous

b)

heterozygous

c)

recessive

d)

dominant

44.

When an organism has two different alleles, it is called

a)

homozygous

b)

heterozygous

c)

recessive

d)

dominant

45.

What is Gregor Mendel's nickname?

a)

The Priest of Peas

b)

The Father of Genetics

c)

The Dad of DNA

d)

The Grandfather of Genes

46.

What is a mental or physical need for a drug?

a)

withdrawal

b)

tolerance

c)

addiction

d)

nicotine

47.

What are abnormal cells that grow out of control?

a)

emphysema

b)

cancer

c)

influenza

48.

What disease results in the destruction of the lungs making breathing very difficult?

a)

lung cancer

b)

emphysema

c)

cancer

49.

What is the addictive ingredient in tobacco products?

a)

tar

b)

carbon monoxide

c)

nicotine

d)

thirdhand smoke

50.

What is the air that is contaminated by tobacco smoke?

a)

firsthand smoke

b)

secondhand smoke

c)

thirdhand smoke

d)

smoke

51.

What is the thick dark liquid that forms when tobacco burns?

a)

tar

b)

tobacco juice

52.
What is the drug in tobacco products that leads to addiction?
a)
Nicotine
b)
Tar
c)
Carbon Monoxide
d)
Cigarettes 
53.
Electronic cigarettes do not contain nicotine. 
a)
True
b)
False
54.
Most of the harm from tobacco to the body is not from the nicotine, but from other chemicals present in the product.
a)
True
b)
False

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