Calculate the heritability of a trait using parent offspring regression data.
Added by Debra G.
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This includes measurements of the trait from both parents and their offspring. For example, if you are studying height, you would need the height of both parents and the height of their children. Show more…
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Adi S.
You also have some data on the length of necks for parents and their offspring (offspring corresponding to each mid-parent listed in adjacent cell). Population 1: Mid-parent Mid-offspring Population 2: Mid-parent Mid-offspring (b) Describe how you would use this data to calculate narrow sense heritability.
Katlin K.
You observe a large population of an annual plant species growing on a hillside. Recall that annual plants grow from seeds left in the soil from the previous season. At maturity, the plants produce their own seeds and die at the end of the season. The seeds produced will give rise to the next generation the following season. You take a random sample of 500 individuals and measure the height of each plant. The plant heights exhibit a normal distribution with a mean of 12 cm and a variance of 8 cm. You observe that in this environment, taller plants seem to produce more seeds and wonder whether plant height in this population could be affected by natural selection. You begin a long-term study of the population. a) It would be difficult to determine the heritability of height using Midparent-Offspring regression in this population for a variety of reasons, BUT we can do it in a Thought Experiment. Ignoring all complications, explain the general steps involved in estimating the heritability of height using Midparent-Offspring Regression (for any trait in any organism, not this specific plant height case). What result from your statistical procedure would indicate that the heritability of height in the population is 0.6?
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