Use evolutionary theory to explain the difference in longevity of women in matriarchal and patriachal tribes.Both tribes live in similar ecological conditions and have very similar food habits and lifestyles. How would you test if this explanation is correct?
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Use evolutionary theory to explain the
difference in longevity of women in matriarchal and patriachal tribes.Both tribes live in similar ecological conditions and have very similar food habits and lifestyles. How would you test if this explanation is correct?
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- In some cases, males or females do care for young of their own species that are not their own, as when certain male fish take over and protect egg masses being brooded by other males or when female ducks acquire ducklings that have just left someone else’s nest. Propose alternative hypotheses to explain this phenomenon. Under what circumstances might adoptions actually raise the caregiver’s reproductive success? Under what other circumstances might adopters help nongenetic offspring as a cost of achieving some other goal? Don't write from any online source..Because many of the key mechanisms of evolution activate when sperm and egg combine, volutionary change happens faster for organisms with short life cycles (viruses, bacteria, fruit fly, yeast) compared to organisms with long life cycles (humans, elephants, tortoises). True FalseGive a Darwinian explanation of how cheetahs evolved to become faster. Your explanation is how natural selection works using Cheetahs as an example. Be sure to include and explain the ideas of differential reproductive success and descent with modification. (You do not need to mention the formation of new species.)
- Is sexual selection or natural selection the driver for the differences between males and females? a. In the hollyhock weevil (Rhopalapion longirostre) the females a have much longer rostrum. The length of rostrum is correlated with offspring survival but not mating frequency. b. In the marine iguana species (Amblyrhynchus cristatus) on the islands near Ecuador the males often exceed expected size on a given island. Male size is correlated with survival and number of mating events.Give a Darwinian explanation of how cheetahs evolved to become faster. Your explanation is how natural selection works using Cheetahs as an example. Be sure to include andexplain the ideas of differential reproductive success and descent with modification. (You do not need to mention the formation of new species.)Satellite and attached male horseshoe crabs do not have the same reproductive success. Why hasn’t sexual selection eliminated the low-payoff satellite option if males exercising this option do not leave as many descendants as attached males do? Please don't write from any online source.
- The Pipidae are a family of tongueless frogs that have one or more claws on their toes. While observing these frogs, you notice that males with more claws had more opportunities to mate and father more offspring. You hypothesize that these frogs evolved to have more claws as an adaptive trait to improve reproductive success. To test this hypothesis, you must: 1.look for evidence of multiple claws in ancestors of Pipidae 2.determine if the number of claws is heritable 3.test whether other these males have any other adaptive traits 4.test whether males with no claws are able to matePhalaropes are shore birds with brightly colored females and dull colored males. Females are larger than males and compete with each other for access to males. Considering sexual selection theory, select the idea(s) below that seem(s) most plausible in light of the pattern of sexual dimorphism? Pick all that apply This is a picture of a brightly colored female: O Females incubate eggs and care for the young. Males incubate eggs and care for the young Males are choosy. males are not choosyDescribe thoroughly the selective advantages and disadvantages organisms that reproduce sexually have over those that reproduce asexually, as well as the ramifications of mate choice on the traits present in species. The following questions could help answer the question above. What are the advantages of sexual reproduction? What are the disadvantages? How do traits selected by sexual selection and those selected by differential survival mix in an animal species? i.e. is it more important to mate or survive? Use specific examples to illustrate your point. Your answers should indicate an understanding of the mechanism behind natural selection. Propose a scenario where asexual reproduction would be favorable.
- In a study in which men and women were asked to sit at a computer and navigate through a virtual maze, the men were able to complete the task more quickly and with fewer errors over five trials than the women (Moffat et al. 1998). What possible proximate developmental mechanisms might be responsible for this sex difference in navigational ability? Use the evolutionary explanation for sex differences in spatial learning ability by voles to make a prediction about the nature of human mating systems over evolutionary time.The maintenance of sexual reproduction in populations is a challenge for evolutionary biologists. Explain the paradox of sex and identify reasons that sex is prominent in natural populations.different sexes can be confirmed by studying living species. How could you look for evidence of sexual dimorphism in the fossil record? How could you distinguish this from ontogenetic differences (i.e. juveniles vs. adults)?