Question

1. Thyroxine is secreted by ____ gland, insulin by ______
and adrenaline by ____ gland.

2. If a Zygote has ____ chromosomes, the child is a girl and if it has ___ chromosomes, the child is a boy.

3. All human being have ___
chromosome pairs in their cellular nucles.

plzzzz
its urgent​

Answer 1

Answer:

Please ask one question in one time

Explanation:

Please mark me as brain list please