Vocabulary
define gene flow
the movement of genes into or out of an population.
what dramatically reduces the fitness of any induvial susceptible
when insecticides or antibiotics are introduced
What is genetic drift?
Random change of in allele frequency
how do and why populations evolve
they adapt to their eviroments
Define Bottleneck effect
dramatic shift resulting in decrease size of a population
what is know as the resistance adaptation
The adaptation that allows them to survive and thrive
What is an example of bottleneck effect.
An ancient bug, any you can think of
Dose evolution result in genetic change?
evolution is a process that results in change the genetic material
Define Hardy-Weinberg principle.
like a Punnett square makes predictions but for populations
How dose natural selection affect single-gene and polygenic traits?
in single-gene it can reflect simple changes and in polygenic it changes the disruption of phenotypes
Why would an lioness consider a mate with a darker main?
Males that have higher testosterone grow darker mains and are more aggressive and able to defend their mated and cubs
what causes evolutionary genetic change?
genetic variation can arise from genetic variants from an normal process in which genetic material is rearranged as an cell is getting ready to divide
Define stabilizing selection
when the center of the graph remains constant but the edges get narrow
How is the action of natural selection similar for single-gene and polygenic traits?
still the has changes traits
How does nonrandom mating explain why male ducks, evolved bright, colorful feathers?
Basically like artificial selection where the traits that are expressed in both the parents are passed to their offspring
In genetic terms, what indicates that evolution is occurring in a population?
a new but similar genetic code