Natural Selection

th4ngz's version from 2017-12-06 04:49

Section 1

Question Answer
Artificial selectionHuman act as selective force
Natural selectionNature act as selective force
6 natural selectionOver population, Competition, Variation, Survival, Reproductive success, Time
Anatomical evidenceAnatomical resemble
Vestigal organs evidenceStructure useful for ancestors, but useless now
Embryological evidenceEmbryo resemble
Molecular evidenceMolecular resemble
BiogeographyGeographic habitat cause change
Fossil recordFossil (duh!)

Section 2

Question Answer
Natural selectionHigher chance of survival and reproduce
Genetic driftAllele fluctuate
Gene flowAllele transfer
MutationAllele change

Section 3

Question Answer
Heterozygote advantagePreserve variation in gene pool (sex)
Neutral variationDifferences in DNA sequence does not result advantageous or disadvantageous
Intersexual selectionFemale choose her mate
Intrasexual selectionMale compete for mate
MacroevolutionLarge-scale changes in long time scale
MicroevolutionSmall-scale changes in short time scale

Section 4

Question Answer
Hardy-Weinberg TheoremGene remain constant unless acted by some agents
Conditions for equilibriumLarge population, No migration, No net mutation, Random mate, No natural selection
Bottleneck effectDrastically reduce population
Founder effectIsolated create new population
Stabilizing selectionAct against both extreme
Directional selectionShift the gene curve to one direction
Disruptive selectionAct favor both extreme
Role of mutationIntroduce new allele to the population
Evolutionary limitsLimited by historical constraints, Compromise, Adaptive, Only edit existing traits, Future has no effect

Section 5

Question Answer
Genetic variation factorsMutation, Sexual, Asexual, Polymorphism, Heterozygote
Diploidy limitsRecessive gene survive, while Dominate gene get expressed
Balanced polymorphism limitsFrequency dependent, heterozygote traits
Neutral variationAlleles change result no benefit