In part III of Figure 10.1, the progression of events corresponds to
which of the following
series?
A) zygote, mitosis,
gametophyte, mitosis, fertilization, zygote, mitosis
B)
sporophyte, meiosis, spore, mitosis, gametophyte, mitosis, gametes,
fertilization
C) fertilization, mitosis, multicellular haploid,
mitosis, spores, sporophyte
D) gametophyte, meiosis, zygote,
spores, sporophyte, zygote
E) meiosis, fertilization, zygote,
mitosis, adult, meiosis
sporophyte, meiosis, spore, mitosis, gametophyte, mitosis, gametes, fertilization
In a life cycle such as that shown in part III of Figure 10.1, if the
zygote's chromosome
number is 10, which of the following
will be true?
A) The sporophyte's chromosome number per
cell is 10 and the gametophyte's is 5.
B) The
sporophyte's chromosome number per cell is 5 and the
gametophyte's is 10.
C) The sporophyte and gametophyte
each have 10 chromosomes per cell.
D) The sporophyte and
gametophyte each have 5 chromosomes per cell.
E) The sporophyte
and gametophyte each have 20 chromosomes per cell.
The sporophyte's chromosome number per cell is 10 and the gametophyte's is 5.
Which sample(s) of DNA might be from a nerve cell arrested in G0 of
the cell cycle?
A) I
B) II
C) III
D) either I or
II
E) either I or III
I
Which sample(s) might represent an animal cell in the G2 phase of the
cell cycle?
A) I
B) II
C) III
D) both I and
II
E) either II or III
II
Which sample(s) might represent a zygote?
A) I
B)
II
C) III
D) either I or II
E) either II or III
I
A certain female's number 12 chromosomes both have the blue
gene and number 19
chromosomes both have the long gene. As cells
in her ovaries undergo meiosis, her resulting
eggs (ova) may have
which of the following?
A) either two number 12 chromosomes with
blue genes or two with orange genes
B) either two number 19
chromosomes with long genes or two with short genes
C) either one
blue or one orange gene in addition to either one long or one short
gene
D) one chromosome 12 with one blue gene and one chromosome
19 with one long gene
one chromosome 12 with one blue gene and one chromosome 19 with one long gene
If a female of this species has one chromosome 12 with a blue gene
and another chromosome
12 with an orange gene, and has both
number 19 chromosomes with short genes, she will
produce which of
the following egg types?
A) only blue short gene eggs
B)
only orange short gene eggs
C) one-half blue short and one-half
orange short gene eggs
D) three-fourths blue long and one-fourth
orange short gene eggs
E) three-fourths blue short and one-fourth
orange short gene eggs
one-half blue short and one-half orange short gene eggs
A female with a paternal set of one orange and one long gene
chromosome and a maternal
set comprised of one blue and one short
gene chromosome is expected to produce which of the
following
types of eggs after meiosis?
A) All eggs will have maternal types
of gene combinations.
B) All eggs will have paternal types of
gene combinations.
C) Half the eggs will have maternal and half
will have paternal combinations.
D) Each egg has a one-fourth
chance of having either blue long, blue short, orange long,
or
orange short combinations.
E) Each egg has a
three-fourths chance of having blue long, one-fourth blue short,
three-fourths
orange long, or one-fourth orange short combinations.
Each egg has a one-fourth chance of having either blue long, blue
short, orange long, or
orange short combinations.
Because the rotifers develop from eggs, but asexually, what can you
predict?
A) The eggs and the zygotes are all haploid.
B) The
animals are all hermaphrodites.
C) Although asexual, both males
and females are found in nature.
D) All males can produce
eggs.
E) No males can be found.
No males can be found
How is natural selection related to sexual reproduction as opposed to
asexual reproduction?
A) Sexual reproduction results in many new
gene combinations, some of which will lead to
differential
reproduction.
B) Sexual reproduction results in the most
appropriate and healthiest balance of two sexes in
a
population.
C) Sexual reproduction results in the greatest
number of new mutations.
D) Sexual reproduction allows the
greatest number of offspring to be produced.
E) Sexual
reproduction utilizes far less energy than asexual reproduction.
Sexual reproduction results in many new gene combinations, some of
which will lead to
differential reproduction.
A human cell containing 22 autosomes and a Y chromosome is
A) a
sperm.
B) an egg.
C) a zygote.
D) a somatic cell of a
male.
E) a somatic cell of a female.
a sperm
Homologous chromosomes move toward opposite poles of a dividing cell
during
A) mitosis.
B) meiosis I.
C) meiosis II.
D)
fertilization.
E) binary fission
meiosis I.
If the DNA content of a diploid cell in the G1 phase of the cell
cycle is x, then the DNA
content of the same cell at metaphase of
meiosis I would be
A) 0.25x.
B) 0.5x.
C) x.
D)
2x.
E) 4x.
2x
If we continued to follow the cell lineage from question 3, then the
DNA content of a single
cell at metaphase of meiosis II would
be
A) 0.25x.
B) 0.5x.
C) x.
D) 2x.
E) 4x
x
How many different combinations of maternal and paternal chromosomes
can be packaged in
gametes made by an organism with a diploid
number of 8 (2n = 8)?
A) 2
B) 4
C) 8
D) 16
E) 32
16