Cells commit to a new cell division at a specific point in G1 known as START or the restriction point.

TLS Online TPP Program

#Id: 8050

#Section 2: General Biology

Certain side-chain conformations are energetically favourable, these side chain confirmations are called as Rotamers.

TLS Online TPP Program

#Id: 9209

#Section 3: Genetics, Cellular and Molecular Biology

Founder effect

A few individuals form a population start a new population with a different allele frequency than the original population.

Sampling error can arise is through the founder effect, which results from the establishment of a population by a small number of individuals.

TLS Online TPP Program

#Id: 8127

#Section 2: General Biology

β-Carotene is the precursor of vitamin A1.
Oxidation at C-15 converts retinol to the aldehyde, retinal, and further oxidation produces retinoic acid, a hormone that regulates gene expression. 

TLS Online TPP Program

#Id: 9194

#Section 3: Genetics, Cellular and Molecular Biology

Hitchhiking

An important consequence of linkage disequilibrium is hitchhiking. This happens when an allele at  one locus spreads by natural selection acting on a second locus that is in linkage disequilibrium with  the first.

TLS Online TPP Program

#Id: 7967

#Section 3: Genetics, Cellular and Molecular Biology

Hydrolysis of the bound GTP accompanies disassembly of the SRP and SRP receptor and initiates transfer of the nascent chain and ribosome to a site on the ER membrane, where translocation can take place.