Principal function of all 3 human TGF-β isoforms, TGF-β1, 2, and 3:

Prevent cell proliferation by inducing the synthesis of p15 INK4B

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#Id: 6270

#Unit 8. Inheritance Biology

DOMINANT EPISTASIS

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#Id: 6271

#Unit 8. Inheritance Biology

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#Id: 6272

#Unit 8. Inheritance Biology

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#Id: 6273

#Unit 8. Inheritance Biology

DUPLICATE RECESSIVE EPISTASIS(9:7) Duplicate recessive epistasis, in which two recessive alleles at either of two different loci can suppress a phenotype. 

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#Unit 8. Inheritance Biology

Dominant recessive epistasis (13:3) Pigmentation in paddy rice

P  = purple

              pp=green

              I   =inhibitory gene

              PpIi × PpIi

                       

              P_I_=9  green

              P_ii = 3 purple

              ppI_=3  green

              ppii =1  green

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#Unit 8. Inheritance Biology

Duplicate Dominant gene interaction (15:1) When dominant allele of both gene loci produce  the same phenotype without cumulative effect.