Mechanisms
this mechanism is selective. There is an original random mutation and populations adapt and evolve. This mechanism can produce maximize fitness in an environment.
What is natural selection
this type of selection involves the increased survival and reproduction for organisms at one end or extreme of the range of traits
what is directional selection?
the two postulates of natural selection
what is heritable variation and differential reproductive success?
equations used for a non-evolving population
what is Hardy-Weinberg ?
this species concept is beneficial for cryptic species
What is the biological species concept
This mechanisms change in population genetic composition/allele frequencies is due to random chance. It mostly affects small population in which we see bottleneck effect or founder effect.
What is genetic drift
this type of selection involves the selection against the extremes which results in more survival and reproduction with the average trait
what is stabilizing selection?
this postulate involves at least two traits that are passed down from parent to a viable offspring
what is heritable variation
p + q = 1
what is the allele frequency equation?
physical barrier to prevent reproductive isolation
what is allopatric speciation
migration&mating, spawning, and the movement of gametes
What is gene flow
this type of selection involves the selection of both extremes on either end of survival and reproduction
what is disruptive selection?
this postulate involves finding evidence for a difference in reproduction and survival of individuals with one trait vs the other
what is differential reproductive success?
p2
what is homozygous dominant
biological, morphological, and lineage
what are the 3 species concept
This mechanism is the original source of genetic variation in natural selection
What is mutation?
another name for disruptive selection
what is diversifying selection
similar to selective breeding in which mating is 100% controlled
what is artificial selection?
2pq
what is the heterozygous?
This barrier prevents fertilization
what are prezygotic barriers
This mechanism impacts isolated "islands" of habitat
what is genetic drift?
human baby birth weight is an example of what selection?
stabilizing selection
the ability to survive and reproduce relative to other organisms
q
what is the recessive allele?
This barrier decreases hybrid fitness