Haldane’s rule: Hybrid sterility or hybrid inviability is often limited to the heterogametic sex. 

TLS Online TPP Program

#Id: 4610

#Unit 13. Methods in Biology

Normal cells treated with sodium chromate allowed to absorb and induced to death signals as T-CTLs Death of the target cells is indicated by the release of 51Cr into the supernatant

TLS Online TPP Program

#Id: 2348

#Unit 3. Fundamental Processes

Transcription Is Initiated by RNA Polymerase without the Need for a Primer known as de novo synthesis 

TLS Online TPP Program

#Id: 7309

#Unit 12. Applied Biology

The major form of Hg in the atmosphere is elemental mercury (Hg0 ), which is volatile and is oxidized to mercuric ion (Hg2+) photochemically. Most mercury thus enters aquatic environments as Hg2+.

TLS Online TPP Program

#Id: 7254

#Unit 5. Developmental Biology

Properties of thymus-dependent and thymus-independent antigens

TLS Online TPP Program

#Id: 7145

#Unit 6. System Physiology – Plant

Brassinolide binding to the brassinosteroid receptor kinase

BRASSINOSTEROID-INSENSITIVE1 (BRI1) on the plasma membrane triggers a phosphorylation cascade that causes a repressor protein, BRASSINOSTEROID-INSENSITIVE2

(BIN2), to become inactivated. This results in activation of the transcription factors BRI1-EMS SUPPRESSOR1 (BES1) and BRASSINAZOLE-RESISTANT1 (BZR1) and subsequent gene expression