Question

the gene of red hair is recessive to the gene of black hair what will be the hair colour of a child if a inherits a gene from red colour from his mother and gene for black colour from his father ? Express with the help of a flowchart.

Answer 1

The child will have black hair.  

Let the gene controlling black hair be B and the gene controlling red hair be b.

Hence bb - homozygous RECESSIVE : RED

           Bb - heterozygous : BLACK

           BB - homozygous DOMINANT: BLACK

Check out the pedigree charts attached below to get a clearer understanding of the punnet squares.