BIOB 272 Final Review Exam Questions
and Answers
Which of the following statements regarding evolution is true?
a) evolution is an entirely random process
b) the central tenets of evolution are widely accepted among scientists
c) evolution usually happens for the "good of the species"
d) a central goal of evolutionary biology is to determine the origin of life
e) evolution always results in increased organismal complexity - Correct Answers -b)
the central tenets of evolution are widely accepted among scientists
two important consequences of meiosis are:
a) recombination between sister chromatids, independent assortment
b) the generation of diploid (2N) gametes, random segregation of alleles
c) conjugation, transduction
d) independent assortment, generation of haploid gametes
e) recombination between homologous chromosomes, fertilization - Correct Answers -d)
independent assortment, generation of haploid gametes
duplications resulting in copy number variation for regions of a chromosome...
a) tend to be very rare in human populations
b) are often caused by illegitimate recombination between repetitive regions of the
chromosome
c) are caused by synonymous mutations in genes
d) never influence organismal fitness because they do not disrupt gene dosage
e) were first identified by Fred Sanger - Correct Answers -b) are often caused by
illegitimate recombination between repetitive regions of the chromosome
consider two genes that are separated by a physical map distance of 50 megabases
and a genetic map distance of 25 centimorgans. which of the following statements are
true?
a) the genes are genetically linked
b) the average recombination rate between these genes is 0.5cm/mb
c) the genes are physically linked
d) only a and c are true
e) a, b, and c are true - Correct Answers -e) a, b, and c are true
a common approach used to understand the genetic basis of quantitative traits is...
a) Sanger sequencing
, b) punnet squares
c) genome sequencing
d) genetic mapping of quantitative trait loci (qtl)
e) electrophoresis - Correct Answers -d) genetic mapping of quantitative trait loci (qtl)
a common approach used to estimate broad sense heritability (Hb) is?
a) phenotypic response to selection within the same gene
b) common garden experiments
c) genetic mapping
d) parent-offspring regression
e) next-generation sequencing - Correct Answers -b) common garden experiments
which of the following was not one of Darwin's central hypotheses regarding evolution?
a) species change over time
b) evolution occurs through descent with modification
c) the earth is old
d) DNA is the biochemical basis of heredity
e) B and D - Correct Answers -d) DNA is the biochemical basis of heredity
Which of the following statements is true and provides direct supporting evidence for the
hypothesis that all extant cetaceans (whales and dolphins) descended from terrestrial
ancestors?
a) all extant whales live in aquatic environments
b) all extant cetaceans have completely lost the pelvis
c) fossils such as Pakicetus document that the earliest cetaceans were terrestrial
d) the involcrum is a synapomorphy that is shared by all extant cetaceans
e) the astragalus plays an important functional role in extant whales - Correct Answers -
c) fossils such as Pakicetus document that the earliest cetaceans were terrestrial
what is a locus?
a) one possible form of a gene
b) a group of genetically linked genes on a chromosome
c) the attachment point between two chromatids
d) a position on a chromosome
e) the genetic composition of an individual - Correct Answers -d) a position on a
chromosome
albinism is an autosomal recessive human trait. a phenotypically normal woman and an
albino man produce an albino child. what is the probability that their next child be an
albino female?
a) 0
b) 1/4
c) 1/2
d) 3/4
e) 1/8 - Correct Answers -b) 1/4
and Answers
Which of the following statements regarding evolution is true?
a) evolution is an entirely random process
b) the central tenets of evolution are widely accepted among scientists
c) evolution usually happens for the "good of the species"
d) a central goal of evolutionary biology is to determine the origin of life
e) evolution always results in increased organismal complexity - Correct Answers -b)
the central tenets of evolution are widely accepted among scientists
two important consequences of meiosis are:
a) recombination between sister chromatids, independent assortment
b) the generation of diploid (2N) gametes, random segregation of alleles
c) conjugation, transduction
d) independent assortment, generation of haploid gametes
e) recombination between homologous chromosomes, fertilization - Correct Answers -d)
independent assortment, generation of haploid gametes
duplications resulting in copy number variation for regions of a chromosome...
a) tend to be very rare in human populations
b) are often caused by illegitimate recombination between repetitive regions of the
chromosome
c) are caused by synonymous mutations in genes
d) never influence organismal fitness because they do not disrupt gene dosage
e) were first identified by Fred Sanger - Correct Answers -b) are often caused by
illegitimate recombination between repetitive regions of the chromosome
consider two genes that are separated by a physical map distance of 50 megabases
and a genetic map distance of 25 centimorgans. which of the following statements are
true?
a) the genes are genetically linked
b) the average recombination rate between these genes is 0.5cm/mb
c) the genes are physically linked
d) only a and c are true
e) a, b, and c are true - Correct Answers -e) a, b, and c are true
a common approach used to understand the genetic basis of quantitative traits is...
a) Sanger sequencing
, b) punnet squares
c) genome sequencing
d) genetic mapping of quantitative trait loci (qtl)
e) electrophoresis - Correct Answers -d) genetic mapping of quantitative trait loci (qtl)
a common approach used to estimate broad sense heritability (Hb) is?
a) phenotypic response to selection within the same gene
b) common garden experiments
c) genetic mapping
d) parent-offspring regression
e) next-generation sequencing - Correct Answers -b) common garden experiments
which of the following was not one of Darwin's central hypotheses regarding evolution?
a) species change over time
b) evolution occurs through descent with modification
c) the earth is old
d) DNA is the biochemical basis of heredity
e) B and D - Correct Answers -d) DNA is the biochemical basis of heredity
Which of the following statements is true and provides direct supporting evidence for the
hypothesis that all extant cetaceans (whales and dolphins) descended from terrestrial
ancestors?
a) all extant whales live in aquatic environments
b) all extant cetaceans have completely lost the pelvis
c) fossils such as Pakicetus document that the earliest cetaceans were terrestrial
d) the involcrum is a synapomorphy that is shared by all extant cetaceans
e) the astragalus plays an important functional role in extant whales - Correct Answers -
c) fossils such as Pakicetus document that the earliest cetaceans were terrestrial
what is a locus?
a) one possible form of a gene
b) a group of genetically linked genes on a chromosome
c) the attachment point between two chromatids
d) a position on a chromosome
e) the genetic composition of an individual - Correct Answers -d) a position on a
chromosome
albinism is an autosomal recessive human trait. a phenotypically normal woman and an
albino man produce an albino child. what is the probability that their next child be an
albino female?
a) 0
b) 1/4
c) 1/2
d) 3/4
e) 1/8 - Correct Answers -b) 1/4
