Heterozygote advantage will maintain an allele that is deleterious when it is recessive Blank______Multiple choice question.in environmental conditions in which heterozygotes have the lowest fitnessin any combination of environmental conditions, regardless of the fitness of the heterozygotesin environmental conditions in which heterozygotes have the highest fitnessin environmental conditions in which heterozygotes have intermediate fitness
Question
Heterozygote advantage will maintain an allele that is deleterious when it is recessive Blank______Multiple choice question.in environmental conditions in which heterozygotes have the lowest fitnessin any combination of environmental conditions, regardless of the fitness of the heterozygotesin environmental conditions in which heterozygotes have the highest fitnessin environmental conditions in which heterozygotes have intermediate fitness
Solution
The correct answer is "in environmental conditions in which heterozygotes have the highest fitness".
Heterozygote advantage, also known as overdominance, is a situation in which the heterozygote genotype has a higher relative fitness than either the homozygote dominant or homozygote recessive genotype. The heterozygote is selectively favored, which helps to maintain genetic and allelic diversity in a population. This can occur in various environmental conditions, but it is specifically in those conditions where the heterozygotes have the highest fitness that the deleterious recessive allele will be maintained.
Similar Questions
What can occur when the heterozygous genotype of a trait has a greater fitness than either of the homozygous genotypes?Multiple choice question.one beneficial allele becomes fixed in the populationharmful alleles are eliminated from the populationonly two beneficial alleles are maintained in a populationharmful alleles can be maintained in a population
Consider a gene with two alleles, A1 and A2. If the fitness of A1A2 individuals is higher than the fitness of both A1A1 and A2A2, we are observing Blank______.Multiple choice question.heterozygote advantagenon-random matinginbreedingoutbreeding
What is a mechanism by which harmful alleles can be maintained in a population even though homozygous recessive individuals have greatly reduced fitness?Multiple choice question.gene pool sinkheterozygotes have greater fitnesshomozygotes have greater fitnessHardy-Weinberg stack
In what situation might natural selection maintain a recessive allele even if it is harmful?Multiple ChoiceHomozygous recessive individuals have a higher fitness than heterozygous individuals but only rarely survive long enough to reproduce.Homozygous dominant individuals have a higher survival and reproductive rate than individuals that are heterozygous for the same gene.Individuals that are heterozygous for a gene have a higher survival and reproductive rate than individuals that are homozygous for the gene.Mutation rates are high enough that the recessive allele reappears even though it is lethal.
A heterozygous parent is equally likely to contribute the dominant or the recessive allele to an offspring.Group of answer choicesFalseTrueNext
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