Question

Which statement best describes how alleles are related to genes?

1 An allele is a form of a gene that determines a specific trait.

2 A gene is a form of an allele.

3 A gene is always dominant to an allele.

4 Genes are located on alleles in chromosomes.

Answer 1

The right answer is 1.

A gene is a part of a chromosome forming a unit of genetic information. A gene determines the establishment and transmission of an observable trait. Examples: The gene that determines the rhesus group is on chromosome 1, the gene that determines the blood group (ABO) is on chromosome 9.

The term allele refers to each of the different forms or possible versions of the same gene, relating to the same character.

We have pairs of chromosomes: therefore two alleles.

Answer 2

The correct answer should be 1 An allele is a form of a gene that determines a specific trait.

Alleles are used to determine traits such as eye color, blood type, or anything similar.