Biology for IGCSE & O level - Inheritance (Section 9 - No. 18)
What is the importance of the Y chromosome?
It contains the genes that determines maleness
It always causes the development of male sex organs.
It is only present in the egg cells.
It dictates the color of a person's hair.
Explicació
The Y chromosome contains the SRY gene, which is responsible for the development of male characteristics.