Human Genetics: Karyotypes 46 TOTAL 23 homologous pairs.

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Presentation transcript:

Human Genetics: Karyotypes 46 TOTAL 23 homologous pairs

Sex Chromosomes 2 sex chromosomes Typical Female = XX Typical Male = XY Autosomes: any chromosome that’s not a sex chromosome

What is a karyotype? Number and appearance of chromosome set 1.Search for homologous pairs 2.Examine sex chromosomes 3.Interpret disorder

Monosomy – missing chromosome TURNER SYNDROME Single X Chromosome XO 45; X

Trisomy – have 3 chromosomes instead of 2 Down Syndrome Extra Chromosome 21 47; X

Klinefelter’s Syndrome one or more extra sex chromosome 47; XXY Most common male chromosomal disorder.

SUPER FEMALE XXX

SUPER MALE XYY