FileTitleManuscript Id
Chapter 21 Introductionmorris2e_ch21_1.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_1_dlap.xml5617cd84757a2eab63000000
21.1 Genetic Variation morris2e_ch21_2.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_2_dlap.xml5617cd84757a2eab63000000
Population genetics is the study of patterns of genetic variation. morris2e_ch21_3.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_3_dlap.xml5617cd84757a2eab63000000
Mutation and recombination are the two sources of genetic variation. morris2e_ch21_4.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_4_dlap.xml5617cd84757a2eab63000000
21.2 Measuring Genetic Variation morris2e_ch21_5.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_5_dlap.xml5617cd84757a2eab63000000
To understand patterns of genetic variation, we require information about allele frequencies. morris2e_ch21_6.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_6_dlap.xml5617cd84757a2eab63000000
Early population geneticists relied on observable traits and gel electrophoresis to measure variation. morris2e_ch21_7.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_7_dlap.xml5617cd84757a2eab63000000
DNA sequencing is the gold standard for measuring genetic variation. morris2e_ch21_8.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_8_dlap.xml5617cd84757a2eab63000000
21.3 Evolution and the Hardy–Weinberg Equilibrium morris2e_ch21_9.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_9_dlap.xml5617cd84757a2eab63000000
Evolution is a change in allele or genotype frequency over time. morris2e_ch21_10.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_10_dlap.xml5617cd84757a2eab63000000
The Hardy–Weinberg equilibrium describes situations in which allele and genotype frequencies do not change. morris2e_ch21_11.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_11_dlap.xml5617cd84757a2eab63000000
The Hardy–Weinberg equilibrium relates allele frequencies and genotype frequencies. morris2e_ch21_12.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_12_dlap.xml5617cd84757a2eab63000000
The Hardy–Weinberg equilibrium is the starting point for population genetic analysis. morris2e_ch21_13.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_13_dlap.xml5617cd84757a2eab63000000
21.4 Natural Selection morris2e_ch21_14.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_14_dlap.xml5617cd84757a2eab63000000
Natural selection brings about adaptations. morris2e_ch21_15.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_15_dlap.xml5617cd84757a2eab63000000
The Modern Synthesis combines Mendelian genetics and Darwinian evolution. morris2e_ch21_16.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_16_dlap.xml5617cd84757a2eab63000000
Natural selection increases the frequency of advantageous mutations and decreases the frequency of deleterious mutations. morris2e_ch21_17.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_17_dlap.xml5617cd84757a2eab63000000
Case 4: What genetic differences have made some individuals more and some less susceptible to malaria? morris2e_ch21_18.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_18_dlap.xml5617cd84757a2eab63000000
Natural selection can be stabilizing, directional, or disruptive. morris2e_ch21_19.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_19_dlap.xml5617cd84757a2eab63000000
Sexual selection increases an individual’s reproductive success. morris2e_ch21_20.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_20_dlap.xml5617cd84757a2eab63000000
21.5 Migration, Mutation, Genetic Drift, and Non-Random Mating morris2e_ch21_21.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_21_dlap.xml5617cd84757a2eab63000000
Migration reduces genetic variation between populations. morris2e_ch21_22.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_22_dlap.xml5617cd84757a2eab63000000
Mutation increases genetic variation. morris2e_ch21_23.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_23_dlap.xml5617cd84757a2eab63000000
Genetic drift has a large effect in small populations. morris2e_ch21_24.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_24_dlap.xml5617cd84757a2eab63000000
Non-random mating alters genotype frequencies without affecting allele frequencies. morris2e_ch21_25.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_25_dlap.xml5617cd84757a2eab63000000
21.6 Molecular Evolution morris2e_ch21_26.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_26_dlap.xml5617cd84757a2eab63000000
The molecular clock relates the amount of sequence difference between species and the time since the species diverged. morris2e_ch21_27.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_27_dlap.xml5617cd84757a2eab63000000
The rate of the molecular clock varies. morris2e_ch21_28.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_28_dlap.xml5617cd84757a2eab63000000
Chapter 21 Summarymorris2e_ch21_29.html5617cd84757a2eab63000000
DLAP questionsmorris2e_ch21_29_dlap.xml5617cd84757a2eab63000000