You are studying salamanders to test if offspring fitness is affected by the number of eggs a female oviposits (or how many eggs a female lays). What you learn is that females that lay more eggs produce smaller offspring. This is an example of a Question Blank 1 of 2 choose your answer... and means that there is a Question Blank 2 of 2 choose your answer... to high reproductive output for these salamanders.
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James K.
1. there is a population of rabbits with long tails. The mean tail length is 30cm. we select a group of rabbits to breed with a mean tail length of 10cm. If the heritability of tail length is 0.48, what should the mean length of offspring tails be? 2. Birds live on a single island and eat seeds. A bird's beak morphology affects how efficiently it can eat. During a rainy year, birds with smaller beaks do better. Birds with larger beaks take too much time to eat each seed. The beak depth of the population is 20mm. The beak depth of the selected parents is 8.5mm. And h2 of beak depth is 0.8 What is the predicted beak depth of the offspring?
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You measure reproductive success in a population of organisms as the number of offspring produced by an individual during a lifetime and produce the following graph (the X-axis is the total number of offspring in a lifetime; and the Y-axis is the frequency of individuals in the population which produced that number of offspring) a) Which sex probably experiences stronger sexual selection? [Select ] b) Which sex is more likely to evolve weapons? [Select ] c) Which sex is more likely to evolve ornaments? [Select ] d) Which sex is more likely to be choosy when picking a mate? [Select ]
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