Genes?????

Question

Why does my parents have normal vision, my mums parents and dads parents have normal vision but I have a lazy eye. 1 of my cousins has a lazy eye too.

Is this because lazy eye is recessive? but how did I get it if my parents have normal vision?

Answer 1

see......urs  parents  must  be  heterozygous   and  so  must  be  ur  grandparents  .

lazy eye is recessive& since  recessive  characters   are  expressed  in   homozygous   state  .  u  r  homozygous  recessive  and  so  is  ur  cousin

Answer 2

Quite simple really, "lazy eye" problem is not genetic, you do not inherit it from anyone nor does it run in families.

Answer 3

it is possible that  your parents are  carriers of the reccessive gene for the lazy eye, but because it is recessive they are not affected by it, it is possible that you inherited the 2 recessive genes and therfore are affected.