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.

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

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

A heterozygous parent is equally likely to contribute the dominant or the recessive allele to an offspring.Group of answer choicesFalseTrueNext

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

Dominant alleles dominate recessive alleles, preventing recessive alleles from being expressed in a heterozygote.Group of answer choicesTrueFalse