The α helices of proteins have an average length of ∼12 residues, which corresponds to more than three helical turns, and a length of ∼18 A.

TLS Online TPP Program

#Id: 515

#Unit 2. Cellular Organization

Number of Genes present in per million base pair of genome is called gene density.

TLS Online TPP Program

#Id: 7055

#Unit 11. Evolution and Behavior

Dollo’s law:  A biological generalization positing that complex characters, once lost in evolution, are extremely unlikely to reappear and thus the loss of complex characters is virtually always irreversible.

TLS Online TPP Program

#Id: 3018

#Unit 3. Fundamental Processes

The priming end can be provided by an RNA primer, a nick in DNA, or a priming protein.

TLS Online TPP Program

#Id: 2981

#Unit 3. Fundamental Processes

DNA is synthesized in both semiconservative replication and repair reactions.

TLS Online TPP Program

#Id: 3248

#Unit 3. Fundamental Processes

One of the most mutagenic base analogs is 5-bromouracil, an analog of thymine.