Question

The genotype for the height of an organism is

Tt. What conclusion may be drawn from this?

(A) The allele for height has at least two

different genes.

(B) There are at least two different alleles for

the gene for height.

(C) There are two different genes for height,

each having a single allele.

(D) There is one allele for height with two

different forms.

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Answer 1

Answer:

(B) There are at least two different alleles for

the gene for height.

Explanation:

An allele is a variant form of a gene. Some genes have a variety of different forms, which are located at the same position, or genetic locus, on a chromosome. The heterozygous organism shows that it has two alleles for a single gene.

So the correct option is 'There are at least two different alleles for the gene controlling height'.