Bio 201 S14 Class 6 2 7 14 v2

Count up the squares you can also calculate the ragos

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Unformatted text preview: yRR, YyRr YYrr, Yyrr YyRr yyRR, yyRr yyrr this is a Punnett square for a dihibrid cross parent 1 gamete types parent 2 gamete types YR 25% Yr 25% yR 25% yr 25% YR 25% 1/16 YRYR 1/16 YRYr 1/16 YRyR 1/16 YRyr Yr 25% 1/16 YrYR 1/16 YrYr 1/16 YryR 1/16 Yryr yR 25% 1/16 yRYR 1/16 yRYr 1/16 yRyR 1/16 yRyr yr 25% 1/16 yrYR 1/16 yrYr 1/16 yryR 1/16 yryr parent 1 gamete types YR 25% Yr 25% yR 25% yr 25% 1/16 YYRR 1/16 YYRr 1/16 YyRR 1/16 YyRr Yr 25% 1/16 YYRr 1/16 YYrr 1/16 YyRr 1/16 Yyrr yR 25% 1/16 YyRR 1/16 YyRr 1/16 yyRR 1/16 yyRr yr 25% parent 2 gamete types YR 25% 1/16 YyRr 1/16 Yyrr 1/16 yyRr 1/16 yyrr where do the ratios come from? count up the squares you can also calculate the raGos this way TRANMISSION: what about traits that are not inherited like Mendel’s pea traits? •  e.g. height, weight, skin color •  Are they heritable? •  How do we explain their inheritance paZerns? QuanAtaAve traits •  Many traits do not behave like Mendel’s pea traits or Morgan’s fly traits –  Those traits are DISCRETE – red or white...
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