Question

The dominant trait masks the effect of recessive trait & there is expression of only one trait . Explain briefly

Answer 1

Dominant genes will always prevent the recessive gene from working.If a person has 2 dominant alleles for tallness:T T then he will be tall.If a person has 1 dominant and I recessive allele for tallness:T t then he will be tall.The only way the recessive gene will be expressed is if he has 2 recessive alleles for short:t t then he will be short.
If the pair of genes controlling the characteristic has identical alleles, TT or tt, we call it ahomozygous pair of genes. If the pair of genes controlling the characteristic are different alleles, Tt or Cr, or Cw we call it aheterozygous pair of genes.
When we express thegenotype of a characteristicwe state the pair ofalleles. Genotype examples are TT, Tt, tt, BB, Bb, bb,