Fetal sex is determined by examining cells from amniotic fluid looking for

Chiasmata

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Autosomes

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Sex-chromosomes

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Nucleus

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Solution

The correct option is B Sex-chromosomes
In some species like humans, sex is determined by sex chromosomes. The human females have two X chromosomes, while human males have one X and Y chromosome as sex chromosomes. In humans, one x chromosome becomes deactivated and forms the barr body. This process is called as dosage compensation. Amniocentesis is a foetal sex determination test based on the chromosomal pattern in the amniotic fluid, surrounding the developing embryo.
So, the correct answer is option C.

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