EVERYDAY SCIENCE

Detailed explanation-1: -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. Humans are called diploid organisms because they have two alleles at each genetic locus, with one allele inherited from each parent.

Detailed explanation-2: -(uh-LEEL) One of two or more DNA sequences occurring at a particular gene locus. Typically one allele (“normal” DNA sequence) is common, and other alleles (mutations) are rare.

Detailed explanation-3: -A gene is a stretch of DNA or RNA that determines a certain trait. Genes mutate and can take two or more alternative forms; an allele is one of these forms of a gene. For example, the gene for eye color has several variations (alleles) such as an allele for blue eye color or an allele for brown eyes.

Detailed explanation-4: -A gene essentially is a part of the DNA structure and it decides the genetic traits of all individuals. Alleles are the different variations of the same gene and they determine a single characteristic.

Detailed explanation-5: -Dominant: The allele which shows its full expression in a population. Recessive: The allele which is unable to show its full expression or expresses very less in a population.