IV.Gymnosperm

Two types of sporophylls microsporophylls & megasporophylls. 

They from pollen cones (male cones) & seed cones (female cones) respectively

TLS Online TPP Program

#Id: 8643

#XL - T Zoology

When E2Fs are bound to Rb, not only are they transcriptionally inactive, but they also function to repress transcription by recruiting chromatin-modifying enzymes that promote deacetylation and methylation of specific histone lysines.

TLS Online TPP Program

#Id: 9999

#XL - T Zoology

Increased Ca2+ levels activates Ca2+-dependent signaling molecules such as:

Protein kinase C, Ca2+/calmodulin-dependent protein kinase (CamKII), Calcineurin phosphatase

TLS Online TPP Program

#Id: 7750

#XL - Q Biochemistry

The greater the effective nuclear charge the more tightly an electron is held in by the nucleus because there is less electron shield between the valence electrons and the nucleus, and so, the smaller the radius.

TLS Online TPP Program

#Id: 7049

#XL - T Zoology

He proposed that the embryonic development of an individual organism (its ontogeny) followed the same path as the evolutionary history of its species (its phylogeny).

TLS Online TPP Program

#Id: 1354

#XL - T Zoology

The SH2 domain binds strongly to any peptide containing a critical four-residue core sequence:  phosphotyrosine–glutamic acid–glutamic acid–isoleucine