Allele is
Allele is
- A) an alternate form of a gene
- B) a unit of inheritance
- C) the position or location of the gene on a chromosome
- D) number of chromosomes in the gamete
Correct Answer: A) an alternate form of a gene
Explanation
The question is asking about the meaning of allele. An allele is an alternate form of a gene. Genes are sections of DNA that determine traits such as eye color, hair color, and height. These genes can have different versions, which are called alleles. For example, there is an allele for blue eyes and an allele for brown eyes. Each person inherits two alleles for each gene, one from each parent. If the two alleles are the same, the person is homozygous for that trait. If the two alleles are different, the person is heterozygous. The different alleles can result in different expressions of the trait. For example, if a person inherits the allele for blue eyes from one parent and the allele for brown eyes from the other parent, they will have brown eyes because the brown allele is dominant. To learn more about this, please read the relevant sections of the recommended textbooks.