GENETICS AND EVOLUTION
INHERITANCE AND VARIATION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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A trait that requires only ONE allele to be present for its expression in a heterozygote
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Dominant
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Recessive
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Pure Breeding
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Hybrid
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Explanation:
Detailed explanation-1: -∙ Hemizygous condition refers to the presence of single copy on a gene rather than two as are present for mendelian traits in a diploid organism.
Detailed explanation-2: -In a heterozygous genotype, the dominant allele overrules the recessive one. Therefore, the dominant trait will be expressed.
Detailed explanation-3: -In codominance, the alleles of a gene pair in a heterozygote are fully expressed. This results in offspring with a phenotype that is neither dominant nor recessive. As for the incomplete dominance definition, this form of inheritance occurs when the phenotype is intermediate to the phenotype of the parents.
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