If a cross between heterozygotes for a single trait results in three separate phenotypes, which of the following types of inheritance is the likely reason?Multiple choice question.CodominanceComplete dominanceIncomplete dominance
Question
If a cross between heterozygotes for a single trait results in three separate phenotypes, which of the following types of inheritance is the likely reason?Multiple choice question.CodominanceComplete dominanceIncomplete dominance
Solution
The likely reason for three separate phenotypes resulting from a cross between heterozygotes for a single trait is Codominance. In Codominance, both alleles for a gene are fully expressed, leading to a third, unique phenotype. For example, in human blood types, the A and B alleles are codominant, leading to the AB blood type. Complete dominance would only result in two phenotypes, as one allele would completely mask the other. Incomplete dominance would also result in two phenotypes, as the heterozygous phenotype would be a blend of the two homozygous phenotypes.
Similar Questions
The situation in which the phenotypes of both alleles are exhibited in the heterozygote because both alleles affect the phenotype in separate, distinguishable ways.Group of answer choicescodominancecomplete dominanceincomplete dominance
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Which inheritance pattern is shown for a trait occurring in one sex but not in the opposite sex?Multiple choice question.codominanceincomplete dominancesex-limited inheritancesex-linked inheritancesex-influenced inheritance
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