Say that the dominant gene is represented by B and the recessive gene is represented by b the combinations if using the Punnett square would be BB, Bb, Bb, and bb so 4 possible combinations and 3 possible nonrepetitive combinations- BB, Bb, and bb
I think you look to Genetics, DNA and Heredity . MALES and FEMALES . Women have 46 chromosomes ( 44 autosomes plus two copies of the X chromosome ) in their body cells. They have half of this or 22 autosomes plus an X chromosome in their egg cells. Men have 46 chromosomes ( 44 autosomes plus an X and a Y chromsomes ) in their body cells and have half of these 22 autosomes plus an X or Y chromosome in their sperm cells. when the egg joins with the sperm , the resultant baby has 46 chromosomes ( with either an XX in a female baby or XY in a male baby ).
