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BIO 182- ASU Exam 2 Questions and Answers Latest Update 2025 Already Passed

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BIO 182- ASU Exam 2 Questions and Answers Latest Update 2025 Already Passed (T/F) A snake with stripes would be more likely to survive by fleeing predators in a straight line - Answers True (T/F) Regardless of escape behavior, the color pattern of snakes will be influenced by directional selecti...

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BIO 182- ASU Exam 2 Questions and Answers Latest Update 2025 Already Passed

(T/F) A snake with stripes would be more likely to survive by fleeing predators in a straight line - Answers
True

(T/F) Regardless of escape behavior, the color pattern of snakes will be influenced by directional
selection - Answers True

(T/F) Over many generations, the population of snakes should evolve toward striped snakes that flee by
turning or checkered snakes that flee straight - Answers False

(T/F) The strength of selection for a color pattern is greater in snakes that flee by turning than in snakes
that flee straight - Answers True

(T/F) Although the researcher estimated fitness by survival, he could have also used another proxy for
fitness, such as mating success - Answers True

(T/F) If the researchers are correct, the X chromosomes likely cross over at the locus that controls
normal or barred eyes - Answers True

(T/F) After crossing over, both chromosomes will contain new alleles at the point of crossover - Answers
True

(T/F) If the chromosomes crossed over equally, the resulting gametes would likely have the same
number of genes - Answers True

(T/F) An allele at locus A is more likely than an allele at locus B to remain linked to the allele for barred
eyes - Answers False

(T/F) The allele at locus B is likely to be lethal when combined with the allele for barred eyes - Answers
False

(T/F) If the X chromosome crosses over with the Y chromosome, the resulting gametes are likely to
generate healthy offspring - Answers False

(T/F) Genetic drift occurs whenever a random event causes a genotype to reproduce more than others
in a population - Answers True

(T/F) On average, genetic drift will increase the frequency of a deleterious allele - Answers False

(T/F) If a population doubles in size, a deleterious allele should become less likely to drift to a higher
frequency - Answers True

(T/F) Genetic drift cannot occur in the same generation as natural selection - Answers False

(T/F) Genetic drift cannot eliminate a beneficial allele from a population - Answers False

(T/F) Prior to hunting, the population likely had more alleles for the 47 genes - Answers True

, (T/F) The loss of genetic variation likely stemmed from an increase in the mutation rate - Answers False

(T/F) Following the decline of cheetahs, the population would more likely adapt to environmental
change - Answers False

(T/F) The population was more likely to experience genetic drift before hunting than it was after hunting
- Answers False

(T/F) If the population of cheetahs continues to decline, genetic drift would be more likely to eliminate
new alleles resulting from mutation - Answers True

Allopatry occurs when ___ - Answers populations become separated geographically

Which of the following observations provides the best experimental evidence that populations diverge
during allopatry - Answers Hybrids of offspring cold-adapted and saline-adapted genotypes were less
viable than purebred offspring

When populations become geographically separated for a period and then come back into contact, they
___ become different species - Answers sometimes

(T/F) Speciation occurs more often between allopatric populations than it does between sympatric
populations - Answers True

The range of environmental temperatures in which a genotype can persist is one aspect of its ___ -
Answers niche

The niche of a fish is defined by ___ - Answers temperature, salinity, pH, other species

The thermal niche of a desert organism ___ - Answers will differ from that of a polar organism

The fact that one can find fish in both tropical and polar waters implies that ___ - Answers different
species of fish have adapted to different environmental conditions

Which is the best description of the niche of a salmon ? - Answers salinities between 0 and 3000 ppm

(T/F) An enzyme maintains a rigid structure while catalyzing a reaction - Answers False

Which type of chemical bond will stabilize an enzyme's structure the most ? - Answers Covalent

Organisms such as the Antarctic fish can swim at extremely low temperatures. Which mechanism best
describes how they do this ? - Answers They modify their proteins to be more flexible

Which type of organisms should evolve the most rigid enzymes ? - Answers Desert organisms

(T/F) To replicate this experiment, researchers only needed one population of bacteria, because
bacterial populations contain millions of individuals - Answers False

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