What is the name of the "law" described by the formula in (1) (where R is how related two individuals a and b are, B is the reproductive benefit to B and C is the reproductive cost to a? (1) RabBb > Ca
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What is the name of the "law" described by the formula in (1) (where R is how related two individuals a and b are, B is the reproductive benefit to B and C is the reproductive cost to a?
(1) RabBb > Ca
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- Under what conditions should natural selection favor production of many offspring versus the production of a few well-provisioned offspring?In many hummingbird species in North America, males but not females have a bright red throat patch and both sexes show a preference for red-colored flowers over those with different colors. How would you determine that the sexual dimorphism in throat patch coloration in male hummingbirds evolved by sensory exploitation?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?
- Does Figure 6.5(C) use relative fitness or absolute fitness of the horned lizards in calculating the fitness function? How can you tell from the graph?How does the chemical structure of the carbon atom account for the differences between the male and female lions seen in the photo? Do all the animals produce chemicals that help in expressing the sex differentiating characteristics?How does "guaranteeing" the survival of some reproductive-age individuals through a bottleneck change the effect of that bottleneck? Or does it?
- Given the results of our calculations of inclusive fitness for male pied kingfishers (Ceryle rudis) (see Table 13.1), isn’t it maladaptive to be a delayer? Why aren’t there any completely sterile helper male pied kingfishers? Please don't write from any online source.In reptiles, sex determination was thought to be controlled by sex-chromosome systems or by temperature-dependent sex determination without an inherited component to sex. But as we discussed in section 7.6, in the Australian lizard, Pogona vitticeps, it was recently revealed that sex is determined by both chromosome composition and by the temperature at which eggs are incubated. What effects might climate change have on temperature- dependent sex determination in this species, and how might this impact the sex ratio for this species in subsequent generations?When the product of your coin toss combines with the product of your ‘mates’ coin toss, what process are you simulating?
- Should I try to rescue my sister who is drowning if there is a 75% chance that I will drown in the process? Assume that humans produce an average of 2 offspring in their lifetime. Remember that Hamilton’s rule is satisfied if rB>C. What is the value of C in this situation: What is the value of B in this situation: What is the value of r in this situation: Should I try to rescue my sibling? Yes or noA dairy farmer chooses to mate a male bull only with the female heifers that always make the greatest amount of milk, rather than heifers that produce a small amount of milk. What process is the dairy farmer employing when producing the next generation of calves?What are some of the traits present in the newt population described in the article?How might these traits change from individual to individual? (Hint: Do you think the newts are all exactly the same color or size?)
