2. A quantitative genetics determined the following variance components in a population of crabs found in the Gulf Coast. Additive genetic variance Dominance genetic variance Interaction genetic variance Environmental variance Leg length 3.4 1.7 0.6 2.4 Genetic-environmental variance 0 Body weight 2.7 1.6 0.8 3.7 0 a. Calculate the broad-sense heritability and the narrow-sense heritability for each trait in this population. b. Which trait would you expect to respond the best to selection? WHY?

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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Can someone please help me with part 2a and part 2b?

A quantitative genetics study determined the following variance components in a population of crabs found in the Gulf Coast.

|                      | Leg length | Body weight |
|----------------------|------------|-------------|
| Additive genetic variance      | 3.4        | 2.7         |
| Dominance genetic variance     | 1.7        | 1.6         |
| Interaction genetic variance   | 0.6        | 0.8         |
| Environmental variance         | 2.4        | 3.7         |
| Genetic-environmental variance | 0          | 0           |

a. Calculate the broad-sense heritability and the narrow-sense heritability for each trait in this population.

b. Which trait would you expect to respond the best to selection? WHY?
Transcribed Image Text:A quantitative genetics study determined the following variance components in a population of crabs found in the Gulf Coast. | | Leg length | Body weight | |----------------------|------------|-------------| | Additive genetic variance | 3.4 | 2.7 | | Dominance genetic variance | 1.7 | 1.6 | | Interaction genetic variance | 0.6 | 0.8 | | Environmental variance | 2.4 | 3.7 | | Genetic-environmental variance | 0 | 0 | a. Calculate the broad-sense heritability and the narrow-sense heritability for each trait in this population. b. Which trait would you expect to respond the best to selection? WHY?
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