Campbell Biology Test Bank Chapter 13 Exam Questions With Correct Answers
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Course
Campbell Biology
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Campbell Biology
Campbell Biology Test Bank Chapter 13
Exam Questions With Correct Answers
1) If a horticulturist breeding gardenias succeeds in having a single plant with a particularly desirable set
of traits, which of the following would be her most probable and efficient route to establishing a line of
such...
Campbell Biology Test Bank Chapter 13
Exam Questions With Correct Answers
1) If a horticulturist breeding gardenias succeeds in having a single plant with a particularly desirable set
of traits, which of the following would be her most probable and efficient route to establishing a line of
such plants? - answer✔C) Clone the plant.
2) Which of the following statements defines a genome? - answer✔D) the complete set of an organism's
genes and other DNA sequences
3) Asexual reproduction occurs during which of the following processes? - answer✔B) mitosis
4) Quaking aspen trees can send out underground stems for asexual reproduction. Sexual reproduction
is not as common, but when it does happen, the haploid gametes have 19 chromosomes. How many
chromosomes are in the cells of the underground stems? - answer✔D) 3
5) Which of the following statements is correct in comparing sexual and asexual reproduction? -
answer✔B) In sexual reproduction, individuals transmit half of their nuclear genes to each of their
offspring.
6) At which stage of mitosis are chromosomes usually photographed in the preparation of a karyotype? -
answer✔B) metaphase
7) Which of the following statements is true of a species that has a chromosome number of 2n = 16? -
answer✔C) Each diploid cell has eight homologous pairs of chromosomes.
8) Eukaryotic sexual life cycles show tremendous variation. Which of the following characteristics do all
sexual life cycles have in common? I. Alternation of generations II. Meiosis II. Fertilization IV. Gametes V.
Spores - answer✔B) II, III, and IV
9) Which of the following processes occurs in a plant's sexual life cycle? - answer✔B) gametophytes
produce gametes by mitosis
10) Which of the following statements describes an example of alternation of generations? - answer✔B)
A diploid plant (sporophyte) produces a spore by meiosis that gives rise to a multicellular, haploid pollen
grain (gametophyte).
11) A particular organism has 46 chromosomes in its karyotype. Which of the following statements is
correct regarding this organism? - answer✔D) It produces gametes with 23 chromosomes.
12) A triploid cell contains three sets of homologous chromosomes. If a cell of a diploid species that
normally has 42 chromosomes per cell is triploid, this cell would be expected to have which of the
following sets of chromosomes? - answer✔B) 63 chromosomes in 21 sets of 3
13) Which of the following processes might produce a human zygote with 45 chromosomes? -
answer✔A) an error in meiotic anaphase occurring in either an egg or sperm
14) In a human karyotype, chromosomes are arranged in 23 pairs. If we choose one of these pairs, such
as pair 14, which of the following do the two chromosomes of the pair have in common? - answer✔C)
length, centromere position, staining pattern, and traits coded for by their genes
Refer to the life cycles illustrated in the figure below to answer the following questions. 15) Which of the
life cycles is typical for animals? - answer✔A) I only
16) Which of the life cycles is typical for plants and some algae? - answer✔C) III only
17) Which of the life cycles is typical for most fungi and some protists? - answer✔B) II only
18) In a life cycle such as that shown in part III of the figure above, if the zygote's chromosome number
is ten, which of the following statements will be true? - answer✔A) The sporophyte's chromosome
number per cell is ten and the gametophyte's is five.
19) Which of the following characteristics do homologous chromosomes exhibit? - answer✔B) They
carry information for the same traits.
20) Many organisms spend most of their life cycle in the diploid state. If meiosis produces haploid cells,
how is the diploid number restored for these types of organisms? - answer✔D) by fertilization
21) Which of the following statements is correct regarding the human X chromosomes? - answer✔C) It
carries genes that determine an individual's biological sex.
22) Which of the following statements correctly describes a karyotype? - answer✔B) It is an organized
image of a cell's chromosomes.
23) If a cell has completed meiosis I and the first cytokinesis, and is just beginning meiosis II, which of
the following is an appropriate description of its genetic contents? - answer✔A) It has half the amount
of DNA as the cell that began meiosis.
24) The somatic cells of a privet shrub each contain a total of 46 chromosomes. How do the
chromosomes of this plant differ from the chromosomes of humans, who also have a total of 46? -
answer✔C) Genes of privet shrub chromosomes are significantly different than those in humans.
25) Which of the following statements describes the chromosomal makeup of each daughter cell after
telophase of meiosis I? - answer✔D) The cells are haploid, and the chromosomes are each composed of
two chromatids.
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