The gray mouse lemur (Microcebus murinus) is a species in which females come into estrus and mate with several males on one night each year. Females accept any and all partners, but a genetic analysis of offspring indicated a greater difference in the MHC genes of mothers and actual fathers than in mothers and males selected at random from the population (Schwensow et al. 2008). Use these results to evaluate the various hypotheses on the indirect genetic benefits of polyandry. What do they suggest about the mechanism that enables a sexually promiscuous female mammal to exercise mate choice? Don't write from any online source..

The gray mouse lemur (Microcebus murinus) is a species in which females come into estrus and mate with several males on one night each year. Females accept any and all partners, but a genetic analysis of offspring indicated a greater difference in the MHC genes of mothers and actual fathers than in mothers and males selected at random from the population (Schwensow et al. 2008). Use these results to evaluate the various hypotheses on the indirect genetic benefits of polyandry. What do they suggest about the mechanism that enables a sexually promiscuous female mammal to exercise mate choice? Don't write from any online source..

Biology: The Dynamic Science (MindTap Course List)

4th Edition

ISBN:9781305389892

Author:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Publisher:Peter J. Russell, Paul E. Hertz, Beverly McMillan

Chapter49: Animal Reproduction

Section: Chapter Questions

Problem 3ITD

See similar textbooks

Similar questions

Because the reproductive success of female Hanuman langurs (Semnopithecus entellus) is almost certainly lowered when a newly installed male kills their young infants, selection should favor countermeasures against infanticidal males. In this light, why might already pregnant females mate with a new male soon after a takeover even though they are not ovulating? What significance do you attach to the discovery that when mares are impregnated by stallions at stables away from their home locations, they will also copulate repeatedly with the males in their home stables upon their return?
Asexually reproducing animal populations are rare, but they typically consist of females who produce female offspring, so all offspring can produce more offspring. By contrast, half of the offspring of the sexual reproducers are male and cannot produce offspring. Thus, a clonal population of females can expand much more quickly than a population of sexual reproducers. Potamopyrgus antipodarum is a species of freshwater snail that has spread far beyond its native New Zealand. Some populations of these tiny snails reproduce sexually, and other populations reproduce asexually. Huge asexual populations are now disrupting ecosystems all over the world, particularly where the water is contaminated with phosphorus. Fertilizers and detergents contain phosphorus, so agricultural runoff and other forms of water pollution are common in these regions. Like most animals that cannot reproduce sexually, the asexual snails have at least three sets of chromosomes; like most sexual organisms, the sexual…
Describe the concept of the Red Queen Hypothesis in your own words.
Which of the following is true about sex determination in mammals? Choose all possible answers. a.) The conversion of the genital ridge into the bipotential gonad requires the Sf1, Wt1, and Lhx9 transcription factors. b.) Even if one of the transcription factors mentioned in choice a (Sf1, Wt1, and Lhx9) will lose its function, the normal development of either male or female gonads will still push through. c.) Sry protein binds to the enhancer of the Sox9 gene and elevates expression of this key gene in the ovary-determining pathway. d.) β-catenin functions to initiate the ovarian pathway of development by activating the genes involved in granulosa cell differentiation. e.) Sf1 protein prevents the production of Sox9.
A study was conducted on a population of snowshoe hares in Algonquin Provincial Park, Ontario, Canada. 110 one month-old hares were removed from their nests, micro-transmitters were inserted under their skin, and they were quickly returned to their homes. Scientists monitored their activities on a monthly basis, and during the breeding season checked nests and counted the babies produced for four years. Below is a summary of the data for only the female hares that were tagged (60 individuals). For simplicity, the monthly data has been summed into yearly totals. Survival: 60 were alive at the start the experiment (year = 0), 20 at the start on the next year (year 1), 8 at year 2, 1 at year 3, and 0 at year 4. Fecundity: during year 0, no babies were produced; year 1- females produced an average of 4 babies each; year 2 = 8 babies each; and year 3 = 8 babies each. A. Answer the following questions using the information above. 1. Create a life table for the snowshoe hare.
Minotaur is only found in the Labyrinth on the island of Crete. The area is famous for its annual spectacle of "Minotaur run," where herds of Minotaur rush out of the Labyrinth to reach their breeding grounds on the beautiful Aegean seashore. A group of Olympian scientists discovered that the horn size of the Minotaur is controlled by a single locus, with HH individuals having the longest, the Hh the medium, and hh the shortest horns. It is further found that the long-horned individuals tend to be tangled up along the way during the annual migration out of the Labyrinth, such that only 80% of the HH individuals can make it out of the Labyrinth alive. Once outside the Labyrinth, the short-horned individuals tend to be less successful at finding food, thus 60% would die from starvation before the beginning of the breeding season. Since the Hh individualsâ horn size are just right, so all of them survive the annual challenge. Initially, the annual migration of Minotaur started out with…
Minotaur is only found in the Labyrinth on the island of Crete. The area is famous for its annual spectacle of "Minotaur run," where herds of Minotaur rush out of the Labyrinth to reach their breeding grounds on the beautiful Aegean seashore. A group of Olympian scientists discovered that the horn size of the Minotaur is controlled by a single locus, with HH individuals having the longest, the Hh the medium, and hh the shortest horns. It is further found that the long-horned individuals tend to be tangled up along the way during the annual migration out of the Labyrinth, such that only 80% of the HH individuals can make it out of the Labyrinth alive. Once outside the Labyrinth, the short-horned individuals tend to be less successful at finding food, thus 60% would die from starvation before the beginning of the breeding season. Since the Hh individualsâ horn size are just right, so all of them survive the annual challenge. Initially, the annual migration of Minotaur started out with…
Why males, in most of the species, provide no paternal care?
Based on Standard NGSS MS-LS3-2: Develop and use a model to describe why asexual reproduction results in offspring with identical genetic information and sexual reproduction results in offspring with genetic variation. In reference to the attached image, can you create a model that shows how it is possible that the twins ended up with such different traits yet have the same parents? Keeping in mind that the twins are a set of fraternal twins. Note:Required a cause-and-effect relationship between parents and offspring with the appropriate mechanism, and Diagram shows genetic recombination as well as inheritance
What are advantages of asexual reproduction? Select all that apply. A) In a stable environment, a population that develops from asexual reproduction can grow quickly and thrive. B) In an unstable environment, a population that develops from asexual reproduction can grow quickly and thrive. C) Species that reproduce through asexual reproduction have more genetic diversity. D) Organisms in isolated areas can still reproduce through asexual reproduction.
What is the Red Queen Dynamic? Using the snail example, explain why different parasite and host genotypes are expected to oscillate in frequency? Why would this favor sexual reproduction or outcrossing?
A study on teenage pregnancy and miscarriage reported the following data.1.Calculate for the odds ratio and interpret the value.2.What are the odds of exposure in the outcome-positive group, how about the outcome-negative group?