The five factors that must be true for no evolution to occur in a population are
ID: 202570 • Letter: T
Question
The five factors that must be true for no evolution to occur in a population are:
Infinate population size, Random Mating, No Migration, Mutaion, and Selection
1) River otters are in the clade Mustelidae and inhabit streams and rivers throughout Missouri. They feed on crayfish, fish, aquatic insects, and other small animals. They have few predators within the state of Missouri. Missouri otters are long-lived and active throughout the year. Females give birth to live young every spring and care for these young for-1 year. Do you think the Missouri population of otters is likely to be evolving or not? In your answer, include the five factors that must be true for no evolution to occur in a population. For each state whether you expect the factor to be true or not in otter populations, what evolutionary mechanism would cause evolution if it is violated, and why you think it would or would not be violated specifically in the Missouri otter population. (10 points)Explanation / Answer
ANS.If hardy weinberg law is acheived then no evulution occur.to acheive the equalibrium the five conditions must be met.
1)population must be very large.a small population causes genetic drift.changes in allelic frequency due to chance.example. a small number of coin tosses versus large number of coin tosses.
2)population must be isolated from other populations(no immigration or emmigration).non isolated population causes gene flow.movement of individuals, from one population to another resulting inbreeding of what were once isolated populations.reduces genetic differences between populations.
3)NO mutations:mutations cause new allels to be introduced into the population.
4)Rnadom mating:non random mating causesmore expression of reccessive phenotypes.
Inbreeding:mating between closely related partners.
Assortative mating:individuals choose partners like themselves.in both cases two organisims carrying a recessive gene are more likely to pair up,so a recessive gene phenotype is more likely to expressed.
5)No natural selection:natural selection causes the expression of successful alleles.certain alleles provide traits that create a better abilityto survive and reproduce than the traits of other allels do.