Building A Karyotype Page 2
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3The final two chromosomes are called sex chromosomes. They determine the gender of the individual. The longer of
the chromosomes is called the “X” chromosome. The shorter of the two (if present) is called the “Y” chromosome.
Some organisms, including humans, have paired sex chromosomes. This combination is referred to as XX
chromosomes. The XX combination produces a female and the XY combination produces a male.
6.
Which sex chromosomes are present in patient B? (i.e. XX, XY?)
7.
What is the gender of patient B?
8.
Explain to Francine and Lawrence what you have learned (gender & health) about their unborn child.
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