Which statement about inheritance is true? Girls get most of their traits from their moms; boys get most of their traits from their dads. Male offspring will always have an X-linked genetic disease if the mom is a carrier. Fathers always determine the gender of the offspring in humans. Males never have Y chromosomes.

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Caitlin

Biology

5 July, 05:23

Which statement about inheritance is true? Girls get most of their traits from their moms; boys get most of their traits from their dads. Male offspring will always have an X-linked genetic disease if the mom is a carrier. Fathers always determine the gender of the offspring in humans. Males never have Y chromosomes.

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Lorenzo Stuart · Answer 1

Fathers always determine the gender of the offspring in humans is true. This because mothers have two X chromosomes whereas fathers have one X chromosome and one Y chromosome. It is entirely dependent upon which chromosome from the father does the zygote contain. If father gives an X chromosome then the resulting child is a female whereas if the father gives the Y chromosome, then the resulting child is a male. Hence, the mothers cannot decide the gender of their child as they have both X chromosomes whereas it is the X or the Y chromosome for the father which determines whether it will be a girl or a boy.

Genotype of a female: XX

Genotype of a male: XY