question_answer 41)

  How are alleles of particular gene differ from each other? Explain its significance.

Answer:

                      Alleles are polymorphs that differ in their nucleotide sequence resulting in contrasting phenotype expression. Alleles are the alternative forms of a same gene for, e.g., genes for height have two allele, one for dwarfness (t) and one for tallness (T).Significance (i) A character may have two or more contrasting phenotypic expression, thus resulting variation in the population. (ii) These are used in the studies of inheritance and in understanding their behaviour.