Cell Cycle

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Biology, 7e (Campbell)
Chapter 13: Meiosis and Sexual Life Cycles

Chapter Questions

1) What is a genome?
A) the complete complement of an organism's genes
B) a specific sequence of polypeptides within each cell
C) a specialized polymer of four different kinds of monomers D) a specific segment of DNA that is found within a prokaryotic chromosome E) an ordered display of chromosomes arranged from largest to smallest Topic: Concept 13.1

Skill: Knowledge

2) Which of the following statements about genes is incorrect? A) Genes correspond to segments of DNA.
B) Many genes contain the information needed for cells to synthesize enzymes and other proteins. C) During fertilization, both the sperm and the ovum contribute genes to the resulting fertilized egg. D) Under normal circumstances, each chromosome contains precisely one gene. E) Genetic differences can result from changes in the DNA called mutations. Topic: Concept 13.1

Skill: Comprehension

3) Asexual reproduction and sexual reproduction are different in that A) individuals reproducing asexually transmit 100% of their genes to their progeny, whereas individuals reproducing sexually only transmit 50%. B) asexual reproduction produces offspring that are genetically identical to the parents, whereas sexual reproduction gives rise to genetically distinct offspring. C) asexual reproduction involves a single parent, whereas sexual reproduction involves two. D) asexual reproduction only requires mitosis, whereas sexual reproduction always involves meiosis. E) all of the above

Topic: Concept 13.1
Skill: Comprehension

4) How do the two members of a pair of homologous chromosomes differ from each other? A) their length
B) the identity and relative position of the genes present on each of the chromosomes C) their staining patterns
D) the position of the centromere within each of the chromosomes E) the precise sequence of the DNA within each of the chromosomes Topic: Concept 13.2
Skill: Comprehension

5) What is a karyotype?
A) the set of unique physical characteristics that define an individual B) the collection of all the mutations present within a genome C) a unique combination of chromosomes found in a gamete
D) a system of classifying cell nuclei
E) a display of every pair of homologous chromosomes within a cell, organized according to size and shape Topic: Concept 13.2
Skill: Knowledge

6) By examining a karyotype, it is possible to determine
A) which of two related plant forms is a gametophyte, and which is a sporophyte. B) the sex of an animal.
C) the age of a fungus.
D) A and B only
E) A, B, and C
Topic: Concept 13.2
Skill: Comprehension

7) At which stage of mitosis are chromosomes photographed in the preparation of a karyotype? A) prophase
B) metaphase
C) anaphase
D) telophase
E) interphase
Topic: Concept 13.2
Skill: Knowledge

8) The human X and Y chromosomes are
A) both present in every somatic cell of males and females alike. B) of approximately equal size.
C) almost entirely homologous, despite their different names. D) called "sex chromosomes" because they determine an individual's sex. E) all of the above
Topic: Concept 13.2
Skill: Comprehension

9) If the liver cells of an animal have 24 chromosomes, how many chromosomes do its sperm cells have? A) 6
B) 12
C) 24
D) 48
E) 64
Topic: Concept 13.2
Skill: Comprehension

10) Which of the following is true of a species that has a chromosome number of 2n = 16? A) The species is diploid with 32 chromosomes.
B) The species has 16 sets of chromosomes.
C) There are 8 homologous pairs.
D) During the S phase of the cell cycle there will be 32 separate chromosomes. E) A gamete from this species has 4 chromosomes.
Topic: Concept 13.2
Skill: Comprehension

11) Which of the following is the term for a human cell that contains 22 pairs of autosomes and two X chromosomes? A) an unfertilized...
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