depending upon the sex determination in heridity and evolution how the twins baby a form
Answers
Answered by
1
This was so because the sex cells, which form the bridge across which heredity must pass between the generations, are usually invisible ....Men determine the sex of a baby depending on whether their sperm is carrying an X or Y chromosome ...
Answered by
0
In the XY sex-determination system, the female-provided ovum contributes an X chromosome and the male-provided sperm contributes either an X chromosome or a Y chromosome, resulting in female (XX) or male (XY) offspring, respectively. Hormone levels in the male parent affect the sex ratio of sperm in humans.
you can do more sex to have twins... you can also do it with me... anytime... just comment.. ;)
Similar questions