19_Mendelian geneticsIIIa

19_Mendelian geneticsIIIa - This week: Finish extensions of...

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This week: Finish extensions of Mendelian genetics Examine chromosomal basis for inheritance recombination sex-linked inheritance chromosomal basis for disease Work out the problems at the end of Chapter 14 2-11, 13, 15, 16
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Review How gametes are formed, and how those gametes produce the genotypes Mendel’s law of segregation – the behavior of alleles of a gene Mendel’s law of independent assortment – the behavior of alleles in different genes Using phenotypic ratios to deduce parental genotypes
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Solving Complex Genetics Problems with the Rules of Probability A cross b/w a trihybrid and another with a different genotype: PpYyRr x Ppyyrr Chance of getting at least 2 recessives? Pp x Pp = 1/4, 1/2, 1/4 Yy x yy = 1/2, 1/2 Rr x rr = 1/2, 1/2 Ppyyrr ¼ x ½ x ½ = 1/16 Ppyyrr ½ x ½ x ½ = 1/8 ppYyrr ¼ x ½ x ½ = 1/16 ppyyRr ¼ x ½ x ½ = 1/16 Ppyyrr ¼ x ½ x ½ = 1/16 ----------------------------------- 6/16
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Solving Complex Genetics Problems with the Rules of Probability A cross b/w a trihybrid and another with a different genotype: PpYyRr x Ppyyrr Chance of getting at least 2 recessives? Pp x Pp = 1/4, 1/2, 1/4 Yy x yy = 1/2, 1/2 Rr x rr = 1/2, 1/2 PPyyrr = 1/4 x 1/2 x 1/2 = 1/16 Ppyyrr = 1/2 x 1/2 x 1/2 = 1/8 ppYyrr = 1/4 x 1/2 x 1/2 = 1/16 ppyyRr = 1/4 x 1/2 x 1/2 = 1/16 ppyyrr = 1/4 x 1/2 x 1/2 = 1/16 6/16
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Incomplete dominance
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19_Mendelian geneticsIIIa - This week: Finish extensions of...

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