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BIOLOGY

JAMB 2017 - Question 13

Biology 2017 JAMB Past Questions - Question 13: The allele which phenotypically expresses itself from heterzygous pairing is said to be

Choose the most appropriate option for the gap .

The allele which phenotypically expresses itself from heterzygous pairing is said to be

A: a hybrid

B: a mutant

C: recessive

D: dominant

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Correct Answer

Explanation

Dominant allele is the gene that carries dominant character or trait which is expressed in the appearance of an organism (Phenotypically expressed) even in the presence of recessive gene in a heterozygote. A hybrid is an offspring produced as a result of a cross between two parents that are phenotypically different. A mutant is an offspring that differs phenotypically from its parents because of genetic charge caused by mutation.