Intermediate levels of BMP effect the formation of the neural crest cells.

TLS Online TPP Program

#Id: 1026

#Unit 5. Developmental Biology

Neural plate formation follow the principle of development:  often the signals promoting the specification of one cell type also block the specification of an alternative cell type.

TLS Online TPP Program

#Id: 1698

#Unit 4. Cell Communication and Cell Signaling

The ZnA region of the protein assists in the initial RAG1 binding to active chromatin via its ability to interact with histone H3.

TLS Online TPP Program

#Id: 1040

#Unit 5. Developmental Biology

The first visible sign of limb development is the formation of bilateral bulges called limb buds.

1. limb bud  is 

TLS Online TPP Program

#Id: 6335

#Unit 8. Inheritance Biology

Many turtles, crocodiles, alligators, and a few birds is affected by temperature during embryonic development.  In turtles, for example, warm incubation temperatures produce more females, whereas cool temperatures produce males.

In alligators, the reverse is true.

 

TLS Online TPP Program

#Id: 8479

#Unit 1. Molecules and their Interaction Relevant to Biology

Parallel sheets characteristically distribute hydrophobic side chains on both sides of the sheet