Which one of the following conditions of the zygotic cell would lead to the birth of a normal human female child?
one X and one Y chromosome
two X chromosomes
only one Y chromosome
only one X chromosome
, the sex chromosome pattern in the human female is XX, while in the male it is XY. A zygote formed by the fusion of an ovum (always X) and a sperm carrying an X chromosome results in an XX condition, which develops into a female baby. A zygote with only one X chromosome (XO) results in Turner's syndrome, which is a chromosomal disorder, not a normal female child , , .
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