Choose all (3) that are correct. Cells become specialized: A. immediately after conception occurs.
B. from stem cells.
C. in order to perform different functions.
D. when certain genes are expressed while others are not​

B. from stem cells.

C. in order to perform different functions.

D. when certain genes are expressed while others are not

Explanation:

A is the only one not correct because conception happens in meiosis which is a whole different process! Hope this helps :)

A

Explanation:

a unit of heredity that is transferred from a parent to offspring and is held to determine some characteristic of the offspring.