2b - PRINCIPLES OF INHERITANCE A. Inheritance of Mendelian...

Info iconThis preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
1 PRINCIPLES OF INHERITANCE A.Inheritance of Mendelian Discontinuous Traits B. Inheritance of Sex Linked Recessive Genes C. Inheritance of Autosomal Dominant and Recessive Traits D. Inheritance of Continuous Traits A. Inheritance of Mendelian Discontinuous Traits 1. Phenylthiocarbamide ( PTC) Tasting • PTC tasting is inherited in a Mendelian form. • The ability to taste is controlled by a dominant allele (T) • Non-tasters are individuals with two recessive alleles (tt). A.Inheritance of Mendelian Discontinuous Traits 1. PHENYLTHIOCARBAMIDE ( PTC) TASTING Inheritance of PTC tasting follows the Mendelian pattern: TT (homozygous) x TT (homozygous) = T T (homozygous) tasters =100 TT (homozygous) x tt (homozygous) = T t (heterozygous) tasters =100 tt (homozygous) x tt (homozygous) = t t (homozygous) non-tasters =100 Tt (heterozygous) x Tt (heterozygous) = 25 percent homozygous tasters (TT) 50 percent heterozygous tasters (Tt) 25 percent homozygous non-tasters (tt)
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
2 A. Inheritance of Mendelian Discontinuous Traits: 2. ABO BLOOD GROUPS: • Blood Type is determined by the production of “antibodies” that react specifically to an “antigen”. • Blood Type A has antibodies that react against the antigens of blood type B . • Blood Type B has antibodies that react against the antigens of blood type A . • Blood Type A B has antibodies that react against the antigens of blood types . • Blood Type O has NO antibodies that react against the antigens of either blood type A or B . A. Inheritance of Mendelian Discontinuous Traits: 2. ABO BLOOD GROUPS Four Blood Types : Type Antibodies React to A x B B x A AB x A or B O NO none A. Inheritance of Mendelian Discontinuous Traits: 2. ABO BLOOD GROUPS
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

Page1 / 8

2b - PRINCIPLES OF INHERITANCE A. Inheritance of Mendelian...

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online