Cyclooxygenase-2 (COX-2)

Enzyme responsible for the formation from arachidonic acid of prostaglandins and other pro-inflammatory mediators.

TLS Online TPP Program

#Id: 8130

#XL - Q Biochemistry

TLS Online TPP Program

#Id: 9541

#XL - T Zoology

James Hutton and Charles Lyell – Uniformitarianism

Darwin was greatly influenced by Lyell’s teachings, and he adopted uniformitarianism in his thinking about evolution.

TLS Online TPP Program

#Id: 8361

#XL - Q Biochemistry

TLS Online TPP Program

#Id: 9428

#XL - T Zoology

A- Parental investment is high in females than male

Reason - Eggs are much larger than sperm.

Females are responsible for gestation and lactation.

B - Parental investment is high in males than female - very rare

Male Mormon crickets transfer a protein-containing spermatophore to females during mating. Almost 30% of a male’s body weight is made up by the spermatophore.

C- Parental investment of males is equal to female

Degree of mate choice should be equal between the sexes.

No sexual dimorphism

Present in bird

TLS Online TPP Program

#Id: 9459

#XL - T Zoology

Ligand binding triggers a conformational change in the JAKs & they phosphorylate each other on a critical tyrosine in the activation loop which greatly enhances kinase activity