Which sentence correctly describes the relationship between genes and alleles? question 3 options: a. alleles are sections of genes. b. genes direct the production of alleles. c. genes and alleles combine to make chromosomes. d. an allele is one version of a gene.

The right option is; D. An allele is one version of a gene

Genes are unit of hereditary, and a segment of deoxyribonucleic acid (DNA) that carries genetic information which is transferred from a parent to offspring. Every individual possess two copies of each gene that are inherited from each parent. Alleles are alternative forms or version of a gene that has little differences in their sequence of DNA bases. These small differences are responsible for every individual’s unique physical traits.

b tumor cells have a cell wall instead of a membrane

explanation:

tumor cells different from normal cells because tumor cells have a cell wall instead of a membrane.