Richard hypothesis 

d/w = resource separation ratio.

d/w < 1, species cannot coexist;

1 < d/w < 3, there will be some competition between species

d/w > 3, species coexist harmoniously

TLS Online TPP Program

#Id: 92

#Unit 5. Developmental Biology

In Autonomous Specification

Prospective potency is equal to prospective fate.

TLS Online TPP Program

#Id: 93

#Unit 5. Developmental Biology

Autonomous Specification

Produces "mosaic" ("determinative") development 

Cells cannot change fate if a blastomere is lost

TLS Online TPP Program

#Id: 94

#Unit 5. Developmental Biology

In Autonomous Specification, 

Cytoplasmic determinants are apportioned to different blastomeres of the early embryo.

TLS Online TPP Program

#Id: 95

#Unit 5. Developmental Biology

Cytoplasmic Determinants

Blastomeres of the early embryo are apportioned a set of critical determination factors within the egg cytoplasm that determine cell fate

TLS Online TPP Program

#Id: 96

#Unit 5. Developmental Biology

Cytoplasmic Determinants are molecules, often transcription factors that regulate gene expression that directs the cell along a particular path of maturation.

TLS Online TPP Program

#Id: 97

#Unit 5. Developmental Biology

Conditional specification is the process by which cells achieve their respective fates by interacting with other cells.