lect 9 Flashcards
a population ecologically
A group of individuals of the same species living within
a restricted geographical area any 2 can interbreed
a population Genetically
A group of individuals who share a common gene pool
and have the potential to interbreed.
population genetics is the study of..and
application of Mendel’s laws and other principles to entire
populations
changes in gene
frequencies
examining a population
phenotype variation/genotype variation
population genetics in culture vs science
culture : composition and evolutionary forces
science: inheritance and prevalence of genes using stats
Population genetics examines
adaptation, speciation, population subdivision,
and population structure
processes of evolution
Natural selection/gene flow/mutations
Phenotypic differences can be..
quantitative or qualitative
some genotypes can have
different phenotypes due to environment impact
natural populations are…
the more closely related the
phenotypically diverse
less variability
low variability disadvantage
extinction when environmental conditions change
Population genetics deals with …especially
where it is due to differences in..of
individuals.
phenotypic diversity,
the genotypic composition
allele freq
evolution
rate of allele occuring at a particular locus, high is common allele , low is rare allele
change in allele freq
Forces Affecting Change in Allele Frequency
1.Natural Selection
2. Mutation:
3. Gene Flow:
4. Genetic Drift:
5. Genetic Bottleneck:
6. Sexual Selection:
Natural Selection:
2. Mutation:
3. Gene Flow:
favors alleles offering fitness advantages.
introduces new alleles through “mistakes” in DNA copying.
introduces new alleles through dispersal (immigration).