Respuesta :
dna or genes. u get 50 genes from your mom and 50 genes from your dad ,so its 50 50 to get brown eyes if only one of your parents has brown eyes. . . . . .
Genes
Traits are inherited from parents in the form of allele carried by genes which leads to the expression of certain physical attributes in a human race. A genetic characteristics is expressed only when it gets contribution from both the parents which means half of the chromosomes carrying genetic material is contributed by mother while rest half of chromosomes are contributed by father.