Karyotypes By Dr. Cao. Karyotypes These are pictures of chromosomes that tell us the number, size,...
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Transcript of Karyotypes By Dr. Cao. Karyotypes These are pictures of chromosomes that tell us the number, size,...
KaryotypesBy Dr. Cao
Karyotypes
These are pictures of chromosomes that tell us the number, size, and shape of chromosomes in an organism
They help us determine:GenderHealth status
Healthy female karyotype
Down’s Syndrome
• Trisomy 21• Symptoms:-delays in physical growth-mild to moderate intellectualDisability-characteristic facial features
Summary: Extra chromosome @ Chromosome 21
Klinefelter’s Syndrome
• Males with an extra X chromosome• Affected individuals do not produceas much testosterone as usualSummary: Extra X chromosome @chromsome # 23
Turner’s Syndrome
• Females who are partly or completely missing an X chromosome• Typically unable to reproduce• May have heart defects and
diabetesSummary: Typically only 1 X chromosome @ chromosome #23