Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child?
Two X chromosomes
Only one Y chromosome
Only one X chromosome
Only X and one Y chromosome
As learnt in
XY-type of sex determination mechanism -
In this type, the male has an X-chromosome along with its counter part distinctly samller Y-choromosome and females have a pair of X-chromosome.
- wherein
E.g. in mammals and humans.
Option 1)
Two X chromosomes
This option is correct
Option 2)
Only one Y chromosome
This option is incorrect
Option 3)
Only one X chromosome
This option is incorrect
Option 4)
Only X and one Y chromosome
This option is incorrect