Is it possible to control the gender of the yet-to-be-conceived baby?

You can improve your chances. Sperm determine sex. A Y chromosome is lighter than an X chromosome. So, if you ultra-centrifuge sperm, the 'males' will be a higher fraction than the heavier 'females'.

It's done in animals all the time. It's not 100%, but it sure increases the odds.

You can't control the gender, but there is a technique available where you can strengthen your odds of having a boy or girl. I think it is really expensive though. Plus morally absurd.

For a girl douche with vinegar and water before intercourse and for a boy douche with baking soda and water. The vinegar slows down the male sperm and the baking soda slows down the female spearm. It changes the pH of the vaginaa secretions. It's safe and uses inexpensive items. I have a vinegar girl.

The male sperm controls this. Or a lab, in a dish. and it's very expensive and access to these labs is limited.

it is scientifically inposible and i dont think we also want to challege God in this field. It could be very dangerous

yes, u can change it from male to female. but not the other

if its already a developing embryo, NO!