4 ms·
They have 2 kinds of affected light sensitive cells, one with activated normal gene and one with mutated.
by anonymfus 10y ago
They have 2 kinds of affected light sensitive cells, one with activated normal gene and one with mutated.
- phkahler 10y agoBut the gene for the pigment is on the X-chromosome which is why women can have both variants and thus be tetrachormatic. But this would require both X's to be active unless this gene is also in the non-inactivated region.