Question

(4) How is sex determined of a foetus?
(5) Write a short note : Cell nucleus.​

Answer 1

Answer:

1. sex is determined at conception by his or her genes.
2. The main function of the cell nucleus is to control gene expression and mediate the replication of DNA during the cell cycle. The nucleus is an organelle found in eukaryotic cells. Inside its fully enclosed nuclear membrane, it contains the majority of the cell's genetic material.

Step-by-step explanation:

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