The ______ suggests that natural selection will favor pathogens that can overcome the defences of an increasing proportion of asexuals within a sexual population, eventually causing the decline of asexuals, A. search cost hypothesis B. multiple niche model C. Red queen hypothesis D. unpredictability model

The ______ suggests that natural selection will favor pathogens that can overcome the defences of an increasing proportion of asexuals within a sexual population, eventually causing the decline of asexuals, A. search cost hypothesis B. multiple niche model C. Red queen hypothesis D. unpredictability model

BIOLOGY:CONCEPTS+APPL.(LOOSELEAF)

10th Edition

ISBN:9781305967359

Author:STARR

Publisher:STARR

Chapter17: Processes Of Evolution

Section: Chapter Questions

Problem 4SA

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Sexual 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.
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.
Under 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.
Sexual selection occurs whena. one sex has a higher fitness than the otherb. a species exhibits sexual dimorphismc. there is a male dominance hierarchy and only the alpha male reproduces. d. There is monogamous mating.e. A trait is favored by one sex such that individuals of the opposite sex possessing that trait have an increased likelihood of reproducing.
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?
Review View Help Editing A BI U v Ev E E E E A Question 3 Females are usually the limiting sexual resource in populations. A) True B) False Question 10 options: is intraspecific variation due to environmental differences during development as opposed to genetic differences. (2 words)
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.
Sexual reproduction provides an advantage to organisms because it increases the A. size of the genome of a species. B. genetic variability in a population. C. fitness of individual alleles of a gene. D. number of mutations during cell division.
What is the most likely evolutionary advantage of sexual reproduction? a. Sexual reproduction is more efficient than asexual reproduction b. Sexual production minimizes adverse mutations c. Sexual reproduction is associated with faster recombination. d. Sexual reproduction leads to significant genetic recombination. e. Sexual recombination is associated with more numerous offspring Which of the following is unnecessary for adaptation? a. Replication b. Selection C. Time d. Competition e. Variation
Which of these statements about the virulence of rabbit myxoma virus is TRUE?A. Rabbit myxoma virus needed to become less virulent so it could coexist with its rabbit hosts.B. Directional selection favored a coevolutionary escalation where resistance evolved in rabbits and less virulence evolved in the virus.C. Rabbit myxoma virus became less virulent over time because natural selection favored strains that did not immediately kill the rabbit hosts, enhancing the likelihood of spreading and infecting other rabbits.D. None of the above is a true statement.
Explain how sexual selection might lead to a)sexual dimorphism and b) members of one sex (usually male) having traits that do not enhance their survival
Which of the following traits is more associated with an Opportunistic (Equilibrial) species? Which of the following traits is more associated with an Opportunistic (Equilibrial) species? A. Short maturation time B. Producing offspring at many different times over the course of life C. Producing a lot of eggs at one time D. High juvenile mortality E. High level of parental care