In humans, genes for color blindness and night blindness (“night blindness”) are recessive and linked to the X chromosome.

In humans, genes for color blindness and night blindness (“night blindness”) are recessive and linked to the X chromosome. They are 40 morganids apart. Hypertrichosis is inherited as a recessive trait linked to the Y chromosome. What kind of children can be expected from the marriage of a diheterozygous woman and a man with hypertrichosis, color blindness and “night blindness” (provided that there is no crossing over)?

From the marriage of a diheterozygous woman and a man with hypertrichosis, color blindness and “night blindness”, one can expect girls with normal vision without hypertrichosis, girls with color blindness with night blindness without hypertrichosis, boys with normal vision and hypertrichosis, and color blind boys with night blindness and hypertrichosis in the ratio 1: 1: 1: 1.