Question

Sometimes we come across people who are either very short or too tall ? Why this happen ?

Answer 1

Answer:

because of the role played by genes.the genes are in pair form.genes are composed of 2 alleles.one allele come from father and the other come from mother.if father is tall and mother is short.so sometime the tall allele is dominant over dwarf allele and sometime short allele is dominant over tall allele .that is why some time we see people who are short and sometime talll