22 notecards = 6 pages (4 cards per page)
Which of the following must exist in a population before natural
selection can act upon that population?
Within six months of effectively using methicillin to treat S. aureus
infections in a community, all new infections were caused by MRSA. How
can this result best be explained?
The rise of methicillin-resistant Staphylococcus aureus (MRSA) can be
considered to be an example of artificial selection because
Which of the following statements most detracts from the claim that
the human appendix is a completely vestigial organ?
What must be true of any organ that is described as vestigial?
12) Which of the following is a true statement concerning genetic
25) Swine are vulnerable to infection by bird flu virus and human flu
virus, which can both be present in an individual pig at the same
time. When this occurs, it is possible for genes from bird flu virus
and human flu virus to be combined, thereby producing a genetically
distinctive virus, which can subsequently cause widespread disease.
17) The role that humans play in artificial selection is to
23) Of the following anatomical structures, which is homologous to
the bones in the wing of a bird?
24) If two modern organisms are distantly related in an evolutionary
sense, then one should expect that
6) In modern terminology, diversity is understood to be a result of
genetic variation. Which of the following is a recognized source of
variation for evolution?
14) Whenever diploid populations are in Hardy-Weinberg equilibrium at
a particular locus
15) In the formula for determining a population's genotype
frequencies, the 2 in the term 2pq is necessary because
16) In the formula for determining a population’s genotype
frequencies, the pq in the term 2pq is necessary because
18) In a Hardy-Weinberg population with two alleles, A and a, that
are in equilibrium, the frequency of the allele a is 0.3. What is the
percentage of the population that is homozygous for this allele?
19) In a Hardy-Weinberg population with two alleles, A and a, that
are in equilibrium, the frequency of allele a is 0.2. What is the
percentage of the population that is heterozygous for this allele?
20) In a Hardy-Weinberg population with two alleles, A and a, that
are in equilibrium, the frequency of allele a is 0.1. What is the
frequency of individuals with AA genotype?
39) The recessive allele that causes phenylketonuria (PKU) is
harmful, except when an infant's diet lacks the amino acid
phenylalanine. What maintains the presence of this harmful allele in a
population's gene pool?
9) Two species of frogs belonging to the same genus occasionally
mate, but the offspring fail to develop and hatch. What is the
mechanism for keeping the two frog species separate?
Theoretically, the production of sterile mules by interbreeding
between female horses (mares) and male donkeys (jacks) should
18) The difference between geographic isolation and habitat
differentiation is the
11) When male horses (stallions) and female donkeys (jennets) mate,
they produce a sterile hybrid called a hinny. Hinnies occur much less
frequently than do mules, but are just as healthy and robust as mules.
Logically, which of the following best accounts for the relative
rarity of hinnies, and what kind of prezygotic isolating mechanism is
at work here?