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Bio Chapter 13

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1) What is a genome?A) The complete complement of an organism's genesB) A specific set of polypeptides within each cellC) A specialized polymer of four different kinds of monomersD)...
A) The complete complement of an organism's genes
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...
D) One gene only is used in a specific cell type.
3) Asexual reproduction and sexual reproduction differ in all but which of the following ways?A) Individuals reproducing asexually transmit 100% of their genes to their progeny, whereasindividuals...
E) Asexual reproduction is utilized only by fungi and protists, whereas sexual reproduction isutilized only by plants and animals
4) If a horticulturist breeding gardenias succeeds in having a single plant with a particularlydesirable set of traits, which of the following would be her most probable and efficient...
C) Clone the plant asexually to produce an identical one.
5) Asexual reproduction results in identical offspring unless which of the following occurs?A) Natural selectionB) CloningC) Crossing overD) MutationE) Environmental chang
D) Mutation
6) The human genome is minimally contained in which of the following?A) Every human cellB) Each human chromosomeC) The entire DNA of a single humanD) The entire human populationE) Each...
A) Every human cell
7) A gene's location along a chromosome is known as which of the following?A) AlleleB) SequenceC) LocusD) VariantE) Trai
C) Locus
8) What is a karyotype?A) The set of unique physical characteristics that define an individualB) The collection of all the mutations present within the genome of an individualC) The...
E) A display of every pair of homologous chromosomes within a cell, organized according tosize and shap
9) At which stage of mitosis are chromosomes usually photographed in the preparation of akaryotype?A) ProphaseB) MetaphaseC) AnaphaseD) TelophaseE) Interphas
B) Metaphase
10) The human X and Y chromosomesA) are both present in every somatic cell of males and females alike.B) are of approximately equal size and number of genes.C) are almost entirely homologous,...
D) include genes that determine an individual's sex.4
11) 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 per cell.B) The species has 16 sets of chromosomes...
C) Each cell has 8 homologous pairs.
12) Eukaryotic sexual life cycles show tremendous variation. Of the following elements, whichdo all sexual life cycles have in common?I.  Alternation of generationsII. MeiosisIII....
C) II, III, and IV
13) Which of these statements is false?A) In humans, each of the 22 maternal autosomes has a homologous paternal chromosome.B) In humans, the 23rd pair, the sex chromosomes, determines...
D) At sexual maturity, ovaries and testes produce diploid gametes by meiosis.
14) In animals, meiosis results in gametes, and fertilization results inA) spores.B) gametophytes.C) zygotes.D) sporophytes.E) clones
C) zygotes
15) Referring to a plant sexual life cycle, which of the following terms describes the process thatleads directly to the formation of gametes?A) Sporophyte meiosisB) Gametophyte mitosisC)...
B) Gametophyte mitosis
16) Which of the following is an example of alternation of generations?A) A grandparent and grandchild each has dark hair, but the parent has blond hair.B) A diploid plant (sporophyte)...
B) A diploid plant (sporophyte) produces, by meiosis, a spore that gives rise to a multicellular,haploid pollen grain (gametophyte).
17) Which of the life cycles is typical for animals?A) I onlyB) II onlyC) III onlyD) I and IIE) I and II
A) I only
18) Which of the life cycles is typical for plants and some algae?A) I onlyB) II onlyC) III onlyD) I and IIE) I and II
C) III only
19) Which of the life cycles is typical for most fungi and some protists?A) I onlyB) II onlyC) III onlyD) I and IIE) I and II
B) II only
20) In part III of Figure 13.1, the progression of events corresponds to which of the followingseries?A) Zygote, mitosis, gametophyte, mitosis, fertilization, zygote, mitosisB) Sporophyte,...
E) Meiosis, fertilization, zygote, mitosis, adult, meiosis
21) In a life cycle such as that shown in part III of Figure 13.1, if the zygote's chromosomenumber is 10, which of the following will be true?A) The sporophyte's chromosome number...
A) The sporophyte's chromosome number per cell is 10 and the gametophyte's is 5.
22) The karyotype of one species of primate has 48 chromosomes. In a particular female, celldivision goes awry and she produces one of her eggs with an extra chromosome (25). The mostprobable...
E) Either anaphase I or I
23) A given organism has 46 chromosomes in its karyotype. We can therefore conclude which ofthe following?7A) It must be human.B) It must be a primate.C) It must be an animal.D) It...
E) Its gametes must have 23 chromosomes
24) A triploid cell contains three sets of chromosomes. If a cell of a usually diploid species with42 chromosomes per cell is triploid, this cell would be expected to have which of...
B) 63 chromosomes in 21 sets of 3
25) A karyotype results from which of the following?A) A natural cellular arrangement of chromosomes in the nucleusB) An inherited ability of chromosomes to arrange themselvesC) The...
C) The ordering of human chromosome images
26) After telophase I of meiosis, the chromosomal makeup of each daughter cell isA) diploid, and the chromosomes are each composed of a single chromatid.B) diploid, and the chromosomes...
D) haploid, and the chromosomes are each composed of two chromatids.
27) How do cells at the completion of meiosis compare with cells that have replicated their DNAand are just about to begin meiosis?A) They have twice the amount of cytoplasm and half...
D) They have half the number of chromosomes and one-fourth the amount of DNA
28) When does the synaptonemal complex disappear?A) Late prophase of meiosis IB) During fertilization or fusion of gametesC) Early anaphase of meiosis ID) Mid-prophase of meiosis IIE)...
A) Late prophase of meiosis I
For the following questions, match the key event of meiosis with the stages listed below.I. Prophase IV. Prophase IIII. Metaphase I VI. Metaphase IIIII. Anaphase I VII. Anaphase IIIV....
D) VII
30) Synapsis of homologous pairs occurs; crossing over may occur.A) IB) IIC) IVD) VIE) VI
E) VI
31) Centromeres of sister chromatids disjoin and chromatids separate.A) IIB) IIIC) IVD) VE) VI
E) VI
32) Which of the following happens at the conclusion of meiosis I?A) Homologous chromosomes are separated.B) The chromosome number per cell is conserved.C) Sister chromatids are separated.D)...
A) Homologous chromosomes are separated.
33) Which diagram represents prophase I of meiosis?A) IB) IIC) IVD) VE) V
C) IV
34) A cell divides to produce two daughter cells that are genetically different.A) The statement is true for mitosis only.B) The statement is true for meiosis I only.C) The statement...
B) The statement is true for meiosis I only.
35) Homologous chromosomes synapse and crossing over occurs.A) The statement is true for mitosis only.B) The statement is true for meiosis I only.C) The statement is true for meiosis...
B) The statement is true for meiosis I only.
36) Chromatids are separated from each other.A) The statement is true for mitosis only.B) The statement is true for meiosis I only.C) The statement is true for meiosis II only.D) The...
E) The statement is true for mitosis and meiosis II
37) Independent assortment of chromosomes occurs.A) The statement is true for mitosis only.B) The statement is true for meiosis I only.C) The statement is true for meiosis II only.10D)...
B) The statement is true for meiosis I only.
38) You have in your possession a microscope slide with meiotic cells on it and a lightmicroscope. What would you look for if you wanted to identify metaphase I cells on the slide?A)...
C) Tetrads lined up at the center of the cell
39) If the cells were from a plant, which sample might represent a gametophyte cell?A) IB) IIC) IIID) Either I or IIE) Either II or II
A) I
40) Which sample of DNA might be from a nerve cell arrested in G0 of the cell cycle?A) IB) IIC) IIID) Either I or IIE) Either II or II
D) Either I or II
41) Which sample might represent an animal cell in G2 phase of the cell cycle?A) IB) IIC) IIID) Both I and IIE) Both II and II
B) II
42) Which sample might represent a sperm cell?A) IB) IIC) IIID) Either I or IIE) Either II or II
C) III
The following questions refer to the essential steps in meiosis described below.1. Formation of four new nuclei, each with half the chromosomes present in the parental nucleus2. Alignment...
E) 5, 2, 4, 3, 1
44) Which of the steps take place in both mitosis and meiosis?A) 2B) 3C) 5D) 2 and 3 onlyE) 2, 3, and 
D) 2 and 3 only
45) Which of the following occurs in meiosis but not in mitosis?A) Chromosome replicationB) Synapsis of chromosomesC) Production of daughter cellsD) Alignment of chromosomes at the...
B) Synapsis of chromosomes
46) If an organism is diploid and a certain gene found in the organism has 18 known alleles(variants), then any given organism of that species can/must have which of the following?A)...
A) At most, 2 alleles for that gene
47) Whether during mitosis or meiosis, sister chromatids are held together by proteins referred toas cohesions. Such molecules must have which of the following properties?A) They must...
D) They must reattach to chromosomes during G1
48) Experiments with cohesions have found thatA) cohesions are protected from destruction throughout meiosis I and II.B) cohesions are cleaved from chromosomes at the centromere before...
C) cohesions are protected from cleavage at the centromere during meiosis I.
49) A tetrad includes which of the following sets of DNA strands?A) Two single-stranded chromosomes that have synapsedB) Two sets of sister chromatids that have synapsedC) Four sets...
B) Two sets of sister chromatids that have synapsed
50) A certain female's chromosomes 12 both have the blue gene and chromosomes 19 both havethe long gene. As cells in her ovaries undergo meiosis, her resulting eggs (ova) may have whichof...
D) One chromosome 12 with one blue gene and one chromosome 19 with one long gen
51) If a female of this species has one chromosome 12 with a blue gene and another chromosome12 with an orange gene, she will produce which of the following egg types?A) Only blue gene...
C) 1/2 blue and 1/2 orange gene eggs
52) A female with a paternal set of one orange and one long gene chromosomes and a maternalset comprised of one blue and one short gene chromosome is expected to produce which of thefollowing...
D) Each egg has 1/4 chance of having blue long, blue short, orange long, or orange shortcombinations.
53) Chiasmata are what we see under a microscope that let us know which of the following isoccurring?A) Asexual reproductionB) Meiosis IIC) Anaphase IID) Crossing overE) Separation...
D) Crossing over
54) How does the sexual life cycle increase the genetic variation in a species?A) By allowing independent assortment of chromosomesB) By allowing fertilizationC) By increasing gene...
A) By allowing independent assortment of chromosomes
55) For a species with a haploid number of 23 chromosomes, how many different combinationsof maternal and paternal chromosomes are possible for the gametes?14A) 23B) 46C) 460D) 920E)...
E) About 8 million


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