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In the Z0 female and ZZ male sex determination system, which parent determines the sex of the offspring?

Option: 1

The mother


Option: 2

The father
 


Option: 3

Both parents

 


Option: 4

It is determined randomly


Answers (1)

best_answer

In the Z0 female and ZZ male sex determination system, the sex of the offspring is determined by the father. This is because males in this system have two copies of the Z sex chromosome (ZZ) while females have only one (Z0). During fertilization, the sperm carrying either a Z or a W chromosome determines the sex of the offspring. If a Z-bearing sperm fertilizes the egg, the offspring will develop as a ZZ male. If a W-bearing sperm fertilizes the egg, the offspring will develop as a Z0 female. Therefore, the father's contribution of sperm determines the sex of the offspring in the Z0 female and ZZ male sex determination system.

Option b is the correct answer. 

 

Posted by

jitender.kumar

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