Tagged Questions
1
vote
2answers
44 views
Which X-Y chromosomes have the developmental genes for mammals?
I know that for a given mammal, half the chromosomes come from father and half from mother. This is typically denoted as x-y. I've recently read about "toolkit" genes that control how a cell develops ...
8
votes
1answer
539 views
What determines testosterone exposure in womb, baby's genetics or mom's body?
I read this article which has the following quote:
The ratio between index and ring finger is believed to be linked to exposure to the male hormone testosterone in the womb.
And I wonder what ...
8
votes
2answers
150 views
Do twins “run in the family”?
My wife and I recently found out that we are going to have twins and so nearly everyone asks if we have a family history of twins. Now I know that the answer for me is that it doesn't matter—as ...
