BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
3rd Edition
ISBN: 9781260670929
Author: Hoefnagels
Publisher: MCG CUSTOM
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Chapter 12, Problem 8MCQ
Summary Introduction
Introduction:
Sexual selection is an important phenomenon in the process of evolution. It poses major impacts on the individuals of a particular population.
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The twofold cost of sex model by John Mynard Smith explains how -
A. asexual females can become predominant in a population.
B. anisogamy results in sexual reproduction.
C. sexual individuals can produce genetically variant offspring.
D. asexual females invest as much in offspring as the sexual females.
Eusociality and haplo-diploidy, in ants and bees, are often (though not always) correlated because…
Group of answer choices:
A. having twice as many genes allows queens to be far more capable of controlling other individuals.
B. being able to control the sex of offspring allows parents to regulate the amount of cooperation.
C. a worker can have more of her genes passed on in a new sister than in an offspring of her own.
D. males have fathers but females don’t.
E. it allows high levels of inbreeding to evolve without negative effects.
The good genes model of sexual selection is a popular hypothesis for mate choice. What is an underlying flaw with the hypothesis that must be explained?
Chapter 12 Solutions
BIOLOGY:THE ESSENTIALS (LL) W/CONNECT
Ch. 12.1 - What are two ways to define evolution?Ch. 12.1 - Prob. 2MCCh. 12.2 - Prob. 1MCCh. 12.2 - What did Darwin observe that led him to develop...Ch. 12.2 - What is modern evolutionary synthesis?Ch. 12.3 - Prob. 1MCCh. 12.3 - Prob. 2MCCh. 12.3 - Prob. 3MCCh. 12.3 - Prob. 4MCCh. 12.4 - Prob. 1MC
Ch. 12.4 - Why doesnt Hardy-Weinberg equilibrium occur in...Ch. 12.5 - Distinguish among directional, disruptive, and...Ch. 12.5 - How can natural selection maintain harmful alleles...Ch. 12.6 - Prob. 1MCCh. 12.6 - Prob. 2MCCh. 12.7 - How do mutations affect an organisms phenotype?Ch. 12.7 - South china tigers once had two color patterns...Ch. 12.7 - Prob. 3MCCh. 12.7 - Prob. 4MCCh. 12 - Microevolution applies to changes that occur a....Ch. 12 - Biological evolution describes how ____ change...Ch. 12 - Prob. 3MCQCh. 12 - What is the most accurate way to explain the...Ch. 12 - Suppose that after an environmental change, foxes...Ch. 12 - Huntington disease is caused by a rare, lethal,...Ch. 12 - A population of 100 sea stars is in Hardy-Weinberg...Ch. 12 - Prob. 8MCQCh. 12 - Darwin observed that different types of organisms...Ch. 12 - Which of the following processes is nonrandom? a....Ch. 12 - Prob. 1WIOCh. 12 - Prob. 2WIOCh. 12 - Explain how understanding evolution is important...Ch. 12 - Write a paragraph that describes the connections...Ch. 12 - Jellyfish Lake, located on the Pacific island of...Ch. 12 - Prob. 6WIOCh. 12 - Explain how harmful recessive alleles can persist...Ch. 12 - Prob. 8WIOCh. 12 - Describe the competing selective forces acting on...Ch. 12 - Some researchers suggest that a giraffes long neck...Ch. 12 - Burning Question 12.1 explains why an organism...Ch. 12 - Review the Survey the Landscape figure in the...Ch. 12 - Describe situations in which the five mechanisms...Ch. 12 - Prob. 3PIT
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- A gene pool is a. all of the genes in a single individual. b. all of the genes in the gametes from a single individual. c. all of the genes in a population of individuals. d. the random mixing of genes during sexual reproduction.arrow_forwardWhich of these situations offers the lowest “opportunity for selection” for males? A. Females choose mates with a fancy ornament. B. Every female chooses one male to mate with for life. C. Locations that females need access to in order to reproduce are rare. D. Males fight each other for access to groups of females.arrow_forwardSexual reproduction in unpredictable environments provide immediate benefits to individuals including the following except -- A. There are more opportunites for offspring to specialize in different niches in an environment. B. The chance that the offspring of sexual ndividuals will be well-matched to their environment increases. C. Bet-hedging strategies are involved for increasing offspring fitness. D. Reduction of competition for resources among genetically related offspring.arrow_forward
- Bateman (1948) and Trivers (1972) came to the conclusion that sexual selection is typically a more potent evolutionary mechanism in males than females because typically… a. Females are likely to combat each other for mates b. Male limitations to reproductive success is gamete production c. Males typically participate in more parental care than females d. Females invest substantially more energy than males in gametearrow_forwardUnder a simple model, the evolution of asexual reproduction strategies will take over a population. The model relies on two assumptions. Which of the following are the assumptions? a. Reproductive mode does not affect how many offspring are produced by a female. b. Reproductive mode does not affect the sexual selection on males c. Reproductive mode does not affect the probability of offspring survival d. Both a. and b. e. Both a. and c.arrow_forwardA. In terms of the barriers in place that keep species separate, explain whether song recognition is a prezygotic barrier or a post-zygotic barrier. B. Explain which type of isolating mechanism this wouldbe once you determine the barrier type. C. Discuss why song would be a barrier to mating with another species and having the incorrect song might change your fitness potential.arrow_forward
- You are studying a genetically modified mouse that produces electric blue fur, which is not a fur color observed in nature. You notice that females prefer males that have the blue fur when given a choice test for mates. This result supports which of the following models of sexual selection? a. Sexual selection for indirect benefits b. Sexual selection for direct benefits c. Sexual selection for arbitrary traits d. None of the abovearrow_forwardWhich statement about an individual that is homozygous for an allele is FALSE? Select one: a. Its parents were necessarily homozygous for that allele. b. Each of the gametes it produces will contain one copy of that allele. c. It will pass that allele to its offspring. d. It is true-breeding with respect to that allele. e. Each of its cells possesses two copies of that allele.arrow_forwardWhich of the following is the best description of sexual selection? a. Sexual selection is the differential reproductive success due to variation in acquiring immunity from mates. b. Sexual selection is the differential reproductive success due to variation in survival from social selection. c. Sexual selection is the differential reproductive success due to variation in acquiring mates or mating success. d. Sexual selection is the differential survival success due to variation in avoiding mates or mating success.arrow_forward
- We learned from hermaphroditic snails in New Zealand and C. elegans that populations that are undergo both sexual and asexual reproduction in the same population can alter the frequency of outcrossing resulting in changes in genetic diversity. Identify the statement that accurately reflects a real result. a. Sexual reproduction prevents the ability of snails and worms to coevolve with their parasites. b. Sexual reproduction frequency increases in the presence of a stressor, like pathogens and parasites. c. Asexual reproduction is favored when there are pathogens and parasites in the environment. d. Asexual reproduction enables the Red Queen hypothesis to play out and enable the pathogen to win.arrow_forwardIn dioecious plants, males usually produce larger flowers that attract more pollinators than do females. This is an example of a. character displacement b. sexual selection through female choice c. sexual selection through male-male competition d. divergence in resource use e. a cost of reproductionarrow_forwardThe fantastic coloration and behavioral displays in the birds of paradise that we watched in class were examples of differential sexual selection driven by: a. Female-female combat b. Male competition c. Female choice d. Intrasexual selectionarrow_forward
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