Q. 8. How are alleles of particular gene differ from each other? Explain its significance.
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 behavior.
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