Chapter 23 Flashcards
What is genetic Variations role in evolution
Genetic variation makes evolution possible

When does genetic variation of occur
It occurs when Gene duplication a mutation come together and produce new alleles and new genes
Genetic variation for sexually reproducing organisms
Most genetic differences come from crossing over and fertilization
What is the hardy weinburg test used for
It tests whether a population has evolved or not
Population is reunited by …..
It’s gene pool
Gene pool
All the genotypes and alleles present in a population
Is BB a genotype or phenotype
Genotype
Micro evolution
It is a generation to generation no change in allele frequency
can change the relative abundance of particular illegal in a gene pool over the course of time
What is the original source of all genetic variation
Mutation
According to the Hardy Weinberg theorem what process will cause the frequencies of alleles of the population to remain constant
If only random meeting is the only process acting on a gene pool then the frequencies of the alleles will remain constant
According to the Hardy Weinberg the room what are some Processes that will cause a populations frequency of alleles to have variation
Sexual selection, genetic drift, immigration, mutation, and nonrandom mating
When is genetic drift the greatest
When the population size is small
Bottleneck effect
This describes the genetic drift that results from the reduction of a population typically from a natural disaster
the only surviving population may not be sent genetically representative of the original population
Gene flow
The transfer of genetic material from one population to another, it can increase the genetic variation of a population we can also cause a loss in alleles
What situation explains the occasional high frequency of certain inherited disorders a man humans established by a small population
Founder effect
