TLS Online TPP Program

#Id: 8930

#XL - T Zoology

If the DNA damage is severe, p21 can cause the cells to senesce or p53 can induce apoptosis.

TLS Online TPP Program

#Id: 10671

#XL - R Botany

Vascular Cambium

The meristematic layer that is responsible for cutting off vascular tissues – xylem and pholem – is called vascular cambium

young stem it is present in patches as a single layer between the xylem and phloem. Later it forms a complete ring

TLS Online TPP Program

#Id: 9298

#XL - R Botany

A.  Chloroplasts

TLS Online TPP Program

#Id: 9071

#XL - T Zoology

Feedback mechanisms suppress signaling by the PKA pathway:

1. Intrinsic GTPase activity of Gαs

2. PDE acts to hydrolyze cAMP to 5′-AMP

3. By BARK

TLS Online TPP Program

#Id: 7352

#XL - T Zoology

Mutation

Mutation has changed the allelic frequency. it increases genetic variation within populations and between population.