Potentiating the effect on phenotypic variation, when normal zebrafish of the same age, zebrafish embryos exposed to ____X____ the larvae develops with severe developmental anomalies, including reduction in the size of head, gill, and thoracic cartilages associated with cranial neural crest migration. What is X?

#Question id: 8963

#Unit 9. Diversity of Life Forms

#Question id: 1214

#Unit 4. Cell Communication and Cell Signaling

A mutation in the FAK gene would likely result in:

#Question id: 1523

#Unit 4. Cell Communication and Cell Signaling

Following statements are regarding to the apoptosis which is induced by trophic factors.

A. The presence of specific trophic factors (e.g., NGF) leads to activation of their cognate receptor tyrosine kinases (e.g., TrkA) and activation of the PKB pathway.

B. DNA damage or ultraviolet irradiation leads to induction of synthesis of the BH3-only Puma protein. Puma binds to Bak and Bax as well as to Bcl-2, allowing Bak and Bax to form oligomeric pores.

C. Removal of a cell from its substratum disrupts integrin signaling, leading to release of the BH3-only Bim protein from the cytoskeleton.

D. Binding of extracellular death signals, such as tumor necrosis factor and Fas ligand, to their receptors oligomerizes an associated protein (FADD), which in turn triggers the caspase cascade, leading to cell murder by apoptosis.

Which of the following pathway does not belong to the trophic factor inducing apoptotic pathway?

#Question id: 2380

#Unit 2. Cellular Organization

DNA and nuclear proteins together make up the.

#Question id: 26993

#Unit 10. Ecological Principles

Which of the following metapopulation has showing lowest variation & highly isolated