Chapter 10
Name
Date
Class
During which phase of meiosis do homologous
You are given a sample of unknown human
1 chromosomes
5 cells
align as tetrads in the middle of
to examine. Analysis of their nuclei
the spindle?
A prophase I
B prophase II
C metaphase I
D metaphase II
reveals that each cell contains 23 chromosomes.
What types of cells might these be?
A ova
B skin cells
C liver cells
D white blood cells
What term is used to describe pairs of
2 chromosomes
having DNA segments, or genes,
for the same traits?
A homologous
B analogous
C homozygous
D parallel
3
Which diagram represents the process of
6 sperm
formation in an organism that has a
diploid chromosome number of eight?
8
8
8
8
8
8
8
8
The diagram below represents the organization
of genetic information within a cell nucleus.
A
2
8
6
B
1
1
3
3
4
8
C
4
4
4
4
4
D
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
Genes
Z
Nucleus
The circle labeled Z most likely represents
.
A amino acids
B chromosomes
C vacuoles
D nucleolus
tall allele, T, is dominant to the short
4 The
allele, t, in Mendel’s pea plants. You examine a
pea plant that exhibits the tall phenotype.
What is its genotype?
A Tt
B TT
C tt
D A and B are both possible.
STANDARDIZED TEST PRACTICE
During which stage of sex cell formation does
7 the
number of chromosomes decrease from
diploid (2n) to haploid (n)?
A prophase I
B anaphase I
C prophase II
D anaphase II
Which was concluded by Mendel as a result of
8 his
genetic research?
A Factors for different traits are inherited
together as a matched pair.
B Polyploidy can be beneficial in agriculture.
C Factors for different traits are inherited
independently of one another.
D Meiosis occurs in two steps, meiosis I and
meiosis II.
CHAPTER 10
19
Chapter 10
Name
performing a monohybrid cross, it is
9 After
important to analyze the results with a
Punnett square. What does each box in a
Punnett square represent?
A possible phenotype
B possible genotype
C one individual
D two possible genotypes
description best identifies
bk Which
characteristics of asexual reproduction?
Date
Class
A researcher crosses the F1 generation of
bn two
snapdragon plants. According to this
information and the diagram below, what is
the ratio of their offspring (F2)?
R
r
R
r
RR
Rr
Rr
Genotype Phenotype
rr
RR
red
Rr
pink
rr
white
A one parent, union of gametes, offspring
process is taking place in the illustration
bl What
shown below?
A
B
C
D
0 red; 4 pink; 0 white
1 red; 2 pink; 1 white
3 red; 0 pink; 1 white
4 red; 0 pink; 0 white
are the possible gamete types that can be
bo What
produced from a parent who is YyRr? Meiosis
produces eggs and sperm that are alike.
A All YR
B All Yr
C YR, Tr, yR, and yr
D Half YR and half yr
to Mendel’s law of segregation, what
bp According
takes place during meiosis?
A Pairs of alleles cross over on chromosomes,
A
B
C
D
fertilization
prophase II
polyploidy
crossing over
statement best explains the significance
bm Which
of meiosis in helping to maintain continuation
exchanging one for the other.
B Pairs of alleles separate in meiosis, and each
gamete receives one allele of a pair.
C Part of an allele is separated, or broken off,
from its chromosome.
D One chromosome is suppressed, and the
other chromosome of the pair determines
the traits of the offspring.
of a species?
A Meiosis produces eggs and sperm that are alike.
B Meiosis provides for chromosomal variation
in the gametes produced by an organism.
C Equal numbers of eggs and sperm are
produced by meiosis.
D The gametes produced by meiosis ensure
the continuation of any particular species by
asexual reproduction.
20
CHAPTER 10
STANDARDIZED TEST PRACTICE
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
similar to but not genetically identical to the
parent
B one parent, no union of gametes, offspring
genetically identical to the parent
C two parents, union of gametes, offspring
similar to but not genetically identical to
parents
D two parents, no union of gametes, offspring
genetically identical to the parents