Independent Assortment Of Two Genes

Detection of Linkage

Linkage

Genes Located 50 Or More Map Units Apart Segregate Independently

Independent Assortment Of Two Genes

AaBb x AaBb:

    ĽAB ĽAb ĽaB Ľab
ĽAB   AABB(1/16) ABAb(1/16) ABaB(1/16) ABab(1/16)
ĽAb AbAB(1/16) AbAb(1/16) AbaB(1/16) Abab(1/16)
ĽaB aBAB(1/16) aBAb(1/16) aBaB(1/16) aBab(1/16)
Ľab abAB(1/16) abAb(1/16) abaB(1/16) abab(1/16)

If two events are independent, the joint probability of both events is obtained by multiplying the probability of each separate event.

P(A) = P(a) = ˝ = P(B) = P(b)
P(AB) = P(A) X P(B) = ˝ x ˝ = Ľ
P(AB) = P(Ab) = P(aB) = P(ab)

P(AB) = P(Ab) = P(aB) = P(ab) = Ľ
P(AB + Ab +aB + ab)2 1/16 probability for each event

Copyright 2000©, Ted Helms

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