Practice Chapter 13
Name___________________________________
MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question.
1
)
What is a genome?
A) the complete complement of an organism's genes
B) a specific sequence of pol
y
peptides within each cel
l
C) an arrangement of our chromosomes from largest to smallest
D) a specialized pol
y
mer of four different kinds of monomers
E) a specific segment of DNA that is found within a prokar
y
otic chromosome
2
)
If the liver cells of an animal have 24 chromosomes, its sperm cells would have how man
y
chromosomes?
A) 12 B) 6 C) 48 D) 24
3
)
Which of the following is true of a species that has a chromosome number of 2n = 16?
A) The species is diploid with 32 chromosomes.
B) A gamete from this species has 8 chromosomes.
C) During the S phase of the cell c
y
cle there will be 32 separate chromosomes.
D) The species has 16 sets of chromosomes.
E) There are 16 homologous pairs.
4
)
Which of the following is the term for a human cell that contains 22 pairs of autosomes and two X
chromosomes?
A) a female somatic cell
B) a sperm cell
C) an unfertilized egg cell
D) a male somatic cell
E) Both A and D are correct.
5
)
In animals, meiosis results in gametes, and fertilization results i
n
A) sporoph
y
tes. B) z
y
gotes. C) clones. D) somatic cells. E) spores.
6
)
In animals, somatic cells result from mitosis and __________ result from meiosis.
A) spores B) clones C) gametes D) diploid cells E) z
y
gotes
7
)
Recombinant chromosomes are the result o
f
A) environmental factors such as radiation and carcinogenic chemicals.
B) separation of homologous chromosomes in metaphase I of meiosis.
C) mutations.
D) crossing-over.
E) incorrect pairings of DNA nucleotides.
8
)
Which of the following is true of the process of meiosis?
A) Four haploid cells result.
B) Four autosomes result.
C) Four diploid cells result.
D) Four chiasmata result.
E) Two diploid cells result.
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