Download General Biology I / Biology 106 Self Quiz Ch 13

General Biology I / Biology 106
Self Quiz Ch 13
Pro: Manhal Chbat, MD
MULTIPLE CHOICE. Choose the one alternative that best completes the
statement or answers the question.
1) What is a genome?
1) ______
A) A specific set of polypeptides within each cell
B) A specialized polymer of four different kinds of monomers
C) A specific segment of DNA that is found within a prokaryotic
chromosome
D) The total of an organism's genes
E) An ordered display of chromosomes arranged from largest to
smallest
2) Asexual reproduction results in identical offspring
2) ______
unless which of the following occurs?
A) Environmental change
B) Crossing over
C) Cloning
D) Mutation
3) The human genome is minimally contained in which of 3) ______
the following?
A) Each human chromosome
B) Every human cell
C) The entire DNA of a single human
D) Each human gene
E) The entire human population
4) The human X and Y chromosomes
4) ______
A) are almost entirely homologous, despite their different names.
B) include genes that determine an individual's sex.
C) include only genes that govern sex determination.
D) are of approximately equal size and number of genes.
E) are both present in every somatic cell of males and females alike.
5) A gene's location along a chromosome is known as
5) ______
which of the following?
A) Locus
B) Trait
C) Sequence
D) Allele
6) Which of these statements is false?
6) ______
A) In humans, each of the 22 maternal autosomes has a homologous
paternal chromosome.
B) Sexual life cycles differ with respect to the relative timing of meiosis
and fertilization.
C) At sexual maturity, ovaries and testes produce diploid gametes by
meiosis.
D) In humans, the 23rd pair, the sex chromosomes, determines whether
the person is female (XX) or male (XY).
7) What is a karyotype?
7) ______
A) A system of classifying cell nuclei
B) A display of every pair of homologous chromosomes within a cell,
organized according to size and shape
C) The set of unique physical characteristics that define an individual
D) The combination of chromosomes found in a gamete
8) In animals, meiosis results in gametes, and fertilization 8) ______
results in
A) spores.
B) gametophytes.
C) clones.
D) zygotes.
9) After telophase I of meiosis, the chromosomal makeup 9) ______
of each daughter cell is
A) diploid, and the chromosomes are each composed of two chromatids.
B) haploid, and the chromosomes are each composed of a single
chromatid.
C) haploid, and the chromosomes are each composed of two chromatids.
D) tetraploid, and the chromosomes are each composed of two
chromatids.
For the following questions, match the key event of meiosis with the stages listed
below.
I. Prophase IV. Prophase II
II. Metaphase I VI. Metaphase II
III. Anaphase I VII. Anaphase II
IV. Telophase I VIII. Telophase II
10) Tetrads of chromosomes are aligned at the equator of
the spindle; alignment determines independent
assortment.
10) ______
A) I
B) II
C) IV
D) VII
E) VIII
11) Synapsis of homologous pairs occurs; crossing over may 11) ______
occur.
A) I
B) II
C) IV
D) VI
E) VII
12) Which of the following occurs in meiosis but not in
12) ______
mitosis?
A) Chromosome replication
B) Condensation of chromatin
C) Alignment of chromosomes at the equator
D) Synapsis of chromosomes
E) Production of daughter cells
13) A human cell containing 22 autosomes and a Y
13) ______
chromosome is
A) a somatic cell of a male.
B) a sperm.
C) a somatic cell of a female.
D) an egg.
14) Homologous chromosomes move toward opposite
14) ______
poles of a dividing cell during
A) meiosis II.
B) mitosis.
C) meiosis I.
D) fertilization.
15) Chiasmata are what we see under a microscope that let 15) ______
us know which of the following is occurring?
A) Separation of homologs
B) Meiosis II
C) Crossing over
D) Anaphase II