Explain why we use the letters v and v to represent the alleles for height

Alleles are the alternative form of gene . When we talk about the allele we have one capital letter that is V here  and one is small letter that is v  here . V represent the dominant allele and the v represent the recessive allele. V will show the dominant phenotype in the individual and it should have one copy of the allele , and the v will show recessive phenotype in the particular individual.

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