Evolutionary Processes Flashcards
Evolution
Change in allele frequencies overtime
Genotype
Appearance or characteristics of an organism
Generic drift
Random change in allele frequencies, typically happens in smaller populations, results in possible extinction and the inability to adapt in an environment
Natural selection
Adaptive organisms are selected in response to their environment, increases genetic variant, prominent in large populations
During the evolutionary process what happens with populations
They either grow or become smaller
Can species remain the same forever
No specie must undergo genetic variations through mutation, genetic drift, and natural selection
Mutation
Errors in dna replication during cell division, change in the DNA sequence of organisms
Can human population change due to genetic drift
Yes because generic variation can change due to genetic engineering
Population
All members of the same species live in one area
Gene pool
Various alleles or evolution so change in allele frequencies
How to identify when evolution is occurring through hardy weinberg
Population is large, no election, no mutation, random selection, no gene flow
Bottle neck affect
Random decrease in population changes gene pool
Founder effect
Small group leaves with different gene
What does genetic drift essentially do
Makes the population smaller or larger
Why can’t species remain the same forever
No species can remain the same due to genetic drift, natural selection, and mutation
