Proximate causes - The subject of cell biology, neurobiology, and many other biological disciplines

Ultimate causes - Their historical causes, especially the action of natural selection

TLS Online TPP Program

#Id: 9887

#XL - T Zoology

Eat me” signals

Dying cells facilitate their own phagocytosis by expressing on their surfaces such as phosphatidyl serine and lysophosphatidyl choline, proteins (annexin I), and altered carbohydrates. 

TLS Online TPP Program

#Id: 9174

#XL - T Zoology

The overall effect of migration is twofold: 

1.it prevents populations from becoming genetically different from one another, 

2.it increases genetic variation within populations.

TLS Online TPP Program

#Id: 10810

#XL - R Botany

TLS Online TPP Program

#Id: 9498

#XL - R Botany

HC toxin is a cyclic peptide. It is synthesized continuously

by two specific tetrapartite cyclic peptide synthetases

(HTS1 and HTS2) and then exported outside the fungal cell. 

TLS Online TPP Program

#Id: 8873

#XL - T Zoology

Cdc25B, activating an initial small pool of cyclin B/1 at the centrosome, which is facilitate centrosome maturation.