Parity rules by Erwin Chargaff

Rule of complementarity (First parity rule)

Rule of Equal amount applies more closely to introns than to exons (Second parity rule)

Cluster rule – Purines in nontemplate strand applies more closely to Exons (Third parity rule)

GC Rule- GC content tends to be greater in exons than in introns (Fourth parity rule

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#Id: 7396

#Unit 5. Developmental Biology

Translated Gurken is received by Torpedo proteins. Torpedo signal causes follicle cells to differentiate to a dorsal morphology.

Gurken does not diffuse to ventral

follicle cells

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#Id: 10514

#Unit 4. Cell Communication and Cell Signaling

In mammals

XIAP (inhibitor of apoptosis proteins) restrain both initiator and effector caspases

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#Id: 9400

#Unit 11. Evolution and Behavior

Konrad Lorenz

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#Id: 936

#Unit 5. Developmental Biology

Precursor cell (or simply precursors), is widely used to denote any ancestral cell type (either stem cell or progenitor cell) of a particular lineage.

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#Id: 6065

#Unit 10. Ecological Principles

BIOGEOGRAPHIC CLASSIFICATION OF INDIA

Our country can be conveniently divided into ten major regions, based on the geography, climate and pattern of vegetation seen and the communities of mammals, birds, reptiles, amphibia, insects and other invertebrates that live in them.