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Related Flashcards
Cards In This Set
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Klinefelter's Syndrome
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XXy
Egg that has XX chromosomes w/ y from male. Male w/ testes underdeveloped, breasts enlarged, longer, poor muscle development, sparse body hair, learning disabilities. |
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Jacob Syndrome
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Xyy
Sperm with yy chromosomes w/ X from female Taller, muscular, acne, below avg. intelligence. |
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Poly-X Syndrome
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XXX
Egg with XX chromosomes w/X from male. Learning Disabilities, but not more feminine, no apparent abnormalities, still fertile and can have normal children. |
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Turner Syndrome
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XO
Sperm or an Egg is O chromosomes w/ O from M or F Female, non-functional ovaries, no puberty or mestruation, no breast development, stocky, webbed neck, borderline intelligence and mental retardation. |
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Nondisjunction
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Meiosis I: homologous pairs fail to separate
Meiosis II: sister chromatids fail to separate both result in abnormal gamete |
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Non-Viable combo?
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Oy
Egg with no X and sperm with y is non-viable. if sperm has an X, then Turner Syndrome is the result. |
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Trisomy
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One more chromosome than usual
Ex) XXy (Klinefelter), Xyy (Jacob), or XXX (poly X) |
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Monosomy
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One fewer chromosome than usual
Ex.) XO (Turner) |
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Amniocentesis
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Use needle to draw amiotic fluid to test cells of fetus for abnormal chromosomes.
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Genotype
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Tells the alleles of the individual (Bb or BB , ex)
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Phenotype
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Describes the appearance or trait of the individual (ex, tall, blue eyes, color blind, black hair)
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