Geneticist have determined that the majority of individuals in an isolate island population have blood type b. type a blood is f
ound to be more common in the mainland populations from which the island was settled. how would a geneticist explain the dominance of blood tpe b in the island population. A- Random mutations have occurred in the island population.
B- Genetic drift has reduced the frequency of type A individuals.
C- Natural selection has only occurred in the mainland population.
D- Environmental conditions on the island are less favorable for type B individuals.
B. Genetic drift has reduced the frequency of type A individuals,which <span>explains the dominance of blood type b in the island population.
</span>Genetic drift is a<span> mechanism of evolution </span>during which allelomorph<span> frequencies of a population </span>modification<span> over generations </span>because of <span>sampling error. The Genetic drift </span>happens in<span> populations of non-infinite size, </span>however<span> its effects </span>are<span> strongest in </span>tiny<span> populations.</span>
The correct answer is genetic drift has minimized the frequency of type A individuals.
Usually, genetic drift takes place in small populations, where infrequently happening alleles encounter with a greater chance of getting lost. Once it starts, genetic drift will continue until the involved allele is the only allele present in a population at a specific locus or until the allele involved is lost.
In the given case, allele A is lost due to genetic drift phenomenon.
20 percent available at the highest tropic level. There is less at the top of the food chain because it has ate things from possibly all areas of the food chain and each level is consuming from lower parts of the chain than it. So with the entire food chain eating on what the top eats there is gonna be less for the top
