Multiple gene segments exist at heavy (V, D, and J) and light-chain (V and J) loci.

TLS Online TPP Program

#Id: 9389

#Unit 11. Evolution and Behavior

Male stickleback fish develop red colour on their ventral side in the breeding season and maintain territories. 

When a conspecific male intruder enters their territory, resident males perform an aggressive display. 

The ethologist Niko Tinbergen presented models of different shapes to territorial male stickleback fish. He found that models of any shape elicited aggressive displays, provided the ventral part of the models was coloured red.

TLS Online TPP Program

#Id: 9621

#Unit 4. Cell Communication and Cell Signaling

Kinase domains typically contain two regions:

N and C lobes

TLS Online TPP Program

#Id: 8958

#Unit 11. Evolution and Behavior

Genetic exchange also happens between distantly related organisms by horizontal gene transfer, or HGT.

HGT is particularly important to prokarytotes and is the most common way by which they acquire new genes.

TLS Online TPP Program

#Id: 1870

#Unit 10. Ecological Principles

The strength of interspecific competition is greater between more closely related species or species in similar guilds.

TLS Online TPP Program

#Id: 9265

#Unit 6. System Physiology – Plant