The elongation of the primitive streak coextensive with the anterior migration of secondary hypoblast cells, and hypoblast directs the movement of the primitive streak.

TLS Online TPP Program

#Id: 2623

#Unit 13. Methods in Biology

The recognition sequences for Type II endonucleases form palindromes with rotational symmetry

TLS Online TPP Program

#Id: 3499

#Unit 12. Applied Biology

Release of phenolic compounds from the cut surfaces of explants causes browning of tissue culture medium.

TLS Online TPP Program

#Id: 101

#Unit 5. Developmental Biology

Conditional Specified cells

Capacity for "regulative" development

Allows cells to acquire different functions

TLS Online TPP Program

#Id: 10076

#Unit 4. Cell Communication and Cell Signaling

Integrins are the principal receptors used by animal cells to bind to the extracellular matrix. 

TLS Online TPP Program

#Id: 10103

#Unit 4. Cell Communication and Cell Signaling

Hemidesmosomes

Adhesion type- Cell-matrix

Cytoskeletal attachment- Intermediate filaments