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Human Karyotype- (Diploid= 2n). Normal human- how many homologous pairs? What is the sex? How many chromosomes does each parent contribute?. What if chromosomes fail to separate properly?. Nondisjunction Failure of chromosomes to separate properly during meiosis.

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Human Karyotype- (Diploid= 2n)


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human karyotype diploid 2n
Human Karyotype- (Diploid= 2n)
  • Normal human- how many homologous pairs?
  • What is the sex?
  • How many chromosomes does each parent contribute?
abnormal gametes result in abnormal diploid condition

Abnormal Gametes result in abnormal diploid condition

SOMATIC TRISOMIES

Down Syndrome

Trisomy 13- cleft palate, eye brain circulatory defects

Trisomy 18- death in months

Trisomy 16-death in months

SEX CHROMOSOMES TRISOMIES

Turner Syndrome-X0- only viable monosomy in humans, Never mature sexually

Klinefelter Syndrome XXY

XYY- Super male- aggression

XXYY

NOTE: the role of the Y chromosome…its presence yields malesness- otherwise default to female