HomeBHS WebsiteCalendarAP Biology10th Grade BiologyStudy HallBiology LinksOnline Biology DictionaryPeriodic TableTeacher's Lounge ScienceCampbell Biology WebsiteCollege Board*Testing CenterREAD INTRODUCTION P. 445
The modern evolutionary synthesis integrated darwinian selection and mendelian inheritance p. 446
POPULATION GENETICS
MODERN SYNTHESIS
A population's gene pool is defined by its allele frequencies p. 446
FIGURE 23.2 P. 447
POPULATION
SPECIES
GENE POOL
UNDERSTAND THE EXAMPLE DISCUSSED FOR THE RED AND WHITE FLOWERS (ALLELE FREQUENCY) P. 447
The Hardy-Weinberg theorem describes a nonevolving population p. 447
STATE THE THEOREM
BE ABLE TO APPLY THE THEOREM
Figure 23.3 p. 448
Summarize each of the following:
HARDY-WEINBERG EQUILIBRIUM P. 448
THE HARDY-WEINBERG EQUATION P. 448
population genetics and health science p. 449
the hardy-weinberg theorem and genetic variation p. 449
The assumptions of the hardy-weinberg theorem p. 449
5 MAIN CONDITIONS
Microevolution is a generation-to-generation change in a population's allele frequencies p. 450
WHY IS THE HARDY-WEINBERG RELEVANT TO EVOLUTION?
MICROEVOLUTION (DEFINE)
The two main causes of microevolution are genetic drift and natural selection p. 450
GENETIC DRIFT (DEFINE)
FIGURE 23.4 P. 451
2 SITUATIONS THAT CAN LEAD TO POPULATIONS SMALL ENOUGH FOR GENETIC DRIFT
BOTTLENECK EFFECT (DEFINE/CAUSE) Figure 23.5 p. 451
FOUNDER EFFECT (DEFINE)
Natural selection p. 452 (summarize)
Gene flow p. 452 (summarize)
GENE FLOW TENDS .
Mutation p. 452
DEFINE
HOW CAN A MUTATION CHANGE A GENE POOL?
Genetic variation occurs within and between populations p. 453
QUANTITATIVE CHARACTERS
DISCRETE CHARACTERS
POLYMORPHISM
MORPHS
Measuring Genetic Variation p. 453
GENE DIVERSITY
NUCLEOTIDE DIVERSITY
Variation between populations (define) p. 454
GEOGRAPHICAL VARIATIONS
CLINE (FIGURE 23.8 P. 454)
Mutation and sexual recombination generate genetic variation p. 454
MUTATION (DEFINE/EXAMPLE)
SEXUAL RECOMBINATION P. 455
Diploidy and balanced polymorphism preserve variation p. 456
DIPLOIDY (DEFINE)
BALANCED POLYMORPHISM P. 456
FREQUENCY-DEPENDENT SELECTION (DEFINE/EXAMPLE)
HETEROZYGOTE ADVANTAGE (DEFINE/EXAMPLE)
Evolutionary fitness is the relative contribution an individual makes to the gene pool of the next generation P. 457 (SUMMARIZE)
DARWINIAN FITNESS
RELATIVE FITNESS
The effect of selection on a varying characteristic can be directional, diversifying, or stabilizing p. 458
MODES OF NATURAL SELECTION
Figure 23.12 p. 458
STABILIZING SELECTION (DEFINE/EXAMPLE)
DIRECTIONAL SELECTION (DEFINE/EXAMPLE)
DIVERSIFYING SELECTION (DEFINE/EXAMPLE)
Natural Selection maintains sexual reproduction p. 459
Figure 23.15 p. 460
SEXUAL SELECTION
SEXUAL DIMORPHISM
INTRASEXUAL SELECTION
INTERSEXUAL SELECTION (FIGURE 23.16 P. 461)
Natural selection cannot fashion perfect organisms p. 461
Four reasons (summarize)
Self Quiz 1-16 p. 462