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Stearns & Hoekstra: Evolution 2e

Chapter 04


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Question 01

Why are population genetics and quantitative genetics important for the understanding of evolution?

Question 02

The commonest types of life cycle are:

Question 03

The spread of an advantageous allele in a population is characterized by:

Question 04

The degree of dominance of an advantageous allele affects the rate of spread of the allele in which one of the following ways?

Question 05

What is the effect of the ploidy level on the rate of change of an advantageous allele?

Question 06

What is the main effect of sexual (as opposed to asexual) reproduction on the spread of an advantageous allele?

Question 07

What is meant with the expression "the fitness of an allele" ?

Question 08

What is the meaning of the concept of inclusive fitness of an allele?

Question 09

The basic model of quantitative genetics makes what assumption?

Question 10

What is the meaning of additive genetic variance?

Question 11

Which traits tend to have lower heritabilities: those strongly correlated with reproduction or morphological traits?

Question 12

A heritability of body weight of 0.4 means that body weight is determined for 40% by genetic factors and for 60% by environmental factors. True or false?

Question 13

The rates of long-term evolutionary change estimated from the fossil record differ from rates of change observed in artificial selection experiments. Which of the following statements is true?

Question 14

In the study of quantitative traits, the genes underlying the observed trait variation are unknown. True or false?

Question 15

Why is a heritability value only valid for the population from which the data have been used for its estimation?