4.3 theoretical genetics

Genetics 4.3 Theoretical Genetics

Definitions ,[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object]

[object Object],[object Object],[object Object],[object Object]

A monohybrid cross ,[object Object]

Performing crosses ,[object Object]

Performing crosses ,[object Object],[object Object],T t t

Performing crosses ,[object Object],[object Object],T t t t t t T

Performing crosses ,[object Object],[object Object],T t t t t t T Tt Tt Tt tt

Performing crosses ,[object Object],[object Object],T t t t t t T F 1 Results: ½ Tt – Tall pea plants ½ tt – short pea plants Tt Tt Tt tt

Multiple Alleles ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

ABO blood groups ,[object Object],[object Object]

Performing crosses ,[object Object],[object Object],I A I B i

Performing crosses ,[object Object],[object Object],I A I B i I B i i I A

Performing crosses ,[object Object],[object Object],I A I B i I B i i I A I A i I A i I B i I B i

Performing crosses ,[object Object],[object Object],I A I B i I B i i I A F 1 Results: ½ I A i – type A blood ½ I B i – type B blood The probability of type A is 50% or 1:2 I A i I A i I B i I B i

Sex Chromosomes ,[object Object],[object Object]

Sex Linkage ,[object Object],[object Object]

Colourblindness ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Hemophilia ,[object Object],[object Object],[object Object],[object Object],[object Object],[object Object],[object Object]

Performing crosses ,[object Object],[object Object],X b Y X B X b

Performing crosses ,[object Object],[object Object],X b Y X B X b X b Y X B X b

Performing crosses ,[object Object],[object Object],X b Y X B X b X b Y X B X b X B X b X b X b X B Y X b Y

Performing crosses ,[object Object],[object Object],X b Y X B F 1 Results: ¼ X B X b – carrier normal female ¼ X b X b – colourblind female ¼ X B Y – normal male ¼ X b Y – colourblind male The probability of colourblindness in the male child is 50% or 1:2 X b X b Y X B X b X B X b X b X b X B Y X b Y

4.3 theoretical genetics

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4.3 theoretical genetics