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Sex chromosomes

In the mammals XX/XY system who is heterogametic?

Males

Females

In the ZZ/ZW system of birds, fish, and some reptiles, who are heterogametic?

Male

Female

Who will only show tarit if they are homozygous in X-linked recessive inheritance?

Males

Females

Males with the affected X-linked recessive trait pass it down to their daughter.

True

False

For Y-linked inheritance, every son of the affected male should get the trait.

True

False

What is the SRY gene?

Gene that won't allow men to produce sperm

Gene that gives color blindness

Sex determining factor

What is aneuploidy?

Having or missing one chromosome

Having an extra set of chromosomes

When a chromosome replicates but fails to divide

Which is Turner Syndrome?

47, XXY

47, XXX

45, XO

Which is Klinefelter Syndrome?

47, XXY or 48, XXXY

40, XX

45, XO

Which is Trisome X?

48, XXX

47, XXX

Which is Jacob Syndrome?

47, XYY

48, XXXY

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