Thymic selection

The most distinctive property of the mature T cells is that they recognize only foreign antigen combined with self-MHC molecules.

TLS Online TPP Program

#Id: 2045

#Unit 8. Inheritance Biology

Genetic Maternal Effect, determination of the phenotype of an offspring not by its own genotype, but by the nuclear genotype of its mother.

TLS Online TPP Program

#Id: 4554

#Unit 8. Inheritance Biology

Two kinds of independence

1. The genes at each locus were independent in their assortment in meiosis
2. The genes were independent in their phenotypic expression
   
   
   

TLS Online TPP Program

#Id: 4555

#Unit 8. Inheritance Biology

Gene Interaction Takes Place When Genes at Multiple Loci Determine a Single Phenotype.

TLS Online TPP Program

#Id: 4556

#Unit 8. Inheritance Biology

Genes exhibit independent assortment but do not act independently in their phenotypic expression.

TLS Online TPP Program

#Id: 4557

#Unit 8. Inheritance Biology

Collaborative gene interaction

TLS Online TPP Program

#Id: 4558

#Unit 8. Inheritance Biology

Comb shapes in chickens

9/16 walnut (R- P-)

3/16 rose (R- pp)

3/16 pea (rr P-)

1/16 single (rr pp)