In order to selectively breed larger corn plants, you only collect seeds from the tallest individuals in your current crop. The mean height of the plants in your crop is 100 cm. You have read that the (narrow-sense) heritability of height in similar populations is 0.4, and you have raised your plants in comparable environmental conditions from similar seed stock. You see a response to selection of 8 cm; unfortunately, you forgot to measure the strength of selection by recording the mean height of the parents of this generation. What is your best estimate of the mean height of the parents, given this heritability and response to selection?

Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
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In order to selectively breed larger corn plants, you only collect seeds from the tallest
individuals in your current crop. The mean height of the plants in your crop is 100 cm.
You have read that the (narrow-sense) heritability of height in similar populations is 0.4,
and you have raised your plants in comparable environmental conditions from similar
seed stock. You see a response to selection of 8 cm; unfortunately, you forgot to
measure the strength of selection by recording the mean height of the parents of this
generation. What is your best estimate of the mean height of the parents, given this
heritability and response to selection?
120 cm
116 cm
112 cm
20 cm
108 cm
Transcribed Image Text:In order to selectively breed larger corn plants, you only collect seeds from the tallest individuals in your current crop. The mean height of the plants in your crop is 100 cm. You have read that the (narrow-sense) heritability of height in similar populations is 0.4, and you have raised your plants in comparable environmental conditions from similar seed stock. You see a response to selection of 8 cm; unfortunately, you forgot to measure the strength of selection by recording the mean height of the parents of this generation. What is your best estimate of the mean height of the parents, given this heritability and response to selection? 120 cm 116 cm 112 cm 20 cm 108 cm
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