Evolution Flashcards
mutations
are the source of new alleles in a population’s gene pool
Population
individuals of the same species in a specified area
gene pool
all genes found in one population
changes in allele frequency of a population is called
microevolution
natural selection
differential survival and reproduction among individuals of a population that vary in details of their shared traits
directional selection
changing environmental conditions can shift allele
sexual dimorphism
lions look different if male or female
genetic drift
a random change in allele frequencies over time
Sympatric speciation
new species form within a range of existing species
like different types of birds
parapatric speciation
has to do with their habitats
coevolution
two species co depend on each other: predator and prey
community
all the species that live in a region
interspecific competion
between different species
intraspecific competition
between same species
niche
required environment for species