Usually an allele that is being positively selected will sweep to fixation in a
ID: 177826 • Letter: U
Question
Usually an allele that is being positively selected will sweep to fixation in a population, but there are several reasons that it might not. All of the following are reasons they might not become fixed except The allele behaves in a co-dominant fashion. Selection is weak and it is at a low frequency in a finite population. Selection is strong, but the population is very small. Individuals with the less favorable allele regularly migrate into the population. The allele is recessive and starts at very low frequency in a small population. If the age of sexual maturation is both a phenotypically plastic trait and a genetically variable one, what relationship(s) would you expect to find? Genotypes differ in the age at which they reproduce Environmental conditions (such as nutrition) affect the age at which individuals reproduce Body size affects the age at which different genotypes reproduce All of the above None of the above If the sex ratio of an endangered and declining population of black footed ferrets changed from 50% to 90% female, what would the consequence for effective population size be? The effective population size will increase. The effective population size stay the same. The effective population size will decrease. The effective population size is unpredictable.Explanation / Answer
32 ans e
The allele may not get fixed if its recessive and has a very low frequency. It might also get eliminated if the population size id small.
33. Ans d
All the factors such as age, environmental conditions, nutrition, body size determine the sexual maturation of an organism
11. Ans a
The effective population will more likely be increased , as the carrying individuals increase there will be more no. Of new offsprings in the new generation.
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