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Non-Mendelian Traits

Non-Mendelian Traits. …When traits DO NOT follow the simple dominant - recessive rules of complete dominance!. Sex Linked - trait with gene found on one of the sex chromosomes; as a result affects men and women differently. Autosomes -regular chromosomes all individuals receive 2

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Non-Mendelian Traits

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  1. Non-Mendelian Traits …When traits DO NOT follow the simple dominant - recessive rules of complete dominance!

  2. Sex Linked - trait with gene found on one of the sex chromosomes; as a result affects men and women differently • Autosomes -regular chromosomes all individuals receive 2 • Sex chromosomes -non matching pair #23 that determines gender Males XY • Females XX

  3. Hemophilia -Sex linked recessive bleeding disorder. Lack of blood clotting protein. Czar Nicholas II of Russia; Alexandra a carrier & son Alexis a hemophiliac

  4. Hemophilia Hemophilia Hemophilia AllelesXH = NormalXh=HemophiliaGirls get 2 copies can be a carrier(heterozygous)Boys get 1 copy and cannot(hemizygous) XH Xh Mother (Carrier) XH Y Father Xh Y Son Hemophiliac XH XH Daughter Normal XH Xh Daughter (Carrier) XH Y Son

  5. Red-Green Color Blindness Sex-linked trait XB Y XB Y XB XB XC Normal male XB Y X XB Xb XB Xb Xb Xb Y Normal female recessive gene Possible outcomes: XBXB XBXb XBY XbY Normal female Normal Female (carrier) Normal male Color-blind male

  6. “WHY” Chromosome

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