The neutral-mutation hypothesis proposes that most molecular variation is neutral with regard to natural selection and is shaped largely by mutation and genetic drift.

TLS Online TPP Program

#Id: 10341

#Section 2: General Biology

TLS Online TPP Program

#Id: 9266

#Section 2: General Biology

N2 constitutes about 80% of the earth’s atmosphere, but the stability of its triple bond renders it inert and metabolically inaccessible to most organisms.

TLS Online TPP Program

#Id: 10381

#Section 2: General Biology

IL-4 increases expression of class II molecules in resting B cells, turning them into more efficient APCs.

TLS Online TPP Program

#Id: 8207

#Section 3: Genetics, Cellular and Molecular Biology

Anthocyanin pigments stored in vacuoles

Color the petals of many flowers so as to attract pollinating insects

TLS Online TPP Program

#Id: 8312

#Section 3: Genetics, Cellular and Molecular Biology

Actin exists as: 

a globular monomer -G-actin 

a filamentous polymer- F-actin