biostp.2

Chapter 10
Name Date Class
1
During which phase of meiosis do homologous
chromosomes align as tetrads in the middle of
the spindle
A prophase I
B prophase II
C metaphase I
D metaphase II
2
What term is used to describe pairs of
chromosomes having DNA segments, or genes,
for the same traits
A homologous
B analogous
C homozygous
D parallel
3
The diagram below represents the organization
of genetic information within a cell nucleus.
5
You are given a sample of unknown human
cells to examine. Analysis of their nuclei
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
6
Which diagram represents the process of
sperm formation in an organism that has a
diploid chromosome number of eight
8
A
8
8
8
B
8
8
8
8
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
4
The tall allele, T, is dominant to the short
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.
8
2
6
C
1
1
3
3
7
During which stage of sex cell formation does
the number of chromosomes decrease from
diploid (2n) to haploid (n)
A prophase I
B anaphase I
C prophase II
D anaphase II
8
Which was concluded by Mendel as a result of
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.
8
4
4
D
4
4
4
4
STANDARDIZED TEST PRACTICE CHAPTER 10 19