Determining gene number for a polygenic characteristic 

(¼)n

TLS Online TPP Program

#Id: 3619

#Unit 3. Fundamental Processes

Peptide bond formation takes place through Proton Shuttle reaction.

TLS Online TPP Program

#Id: 1011

#Unit 5. Developmental Biology

In mammals, the bipotential gonad appears to be moved into the female pathway (ovary development) by the Foxl2, Wnt4, and Rspo1 genes.

TLS Online TPP Program

#Id: 3995

#Unit 2. Cellular Organization

When an ethidium ion intercalates between two base pairs, it causes the DNA to unwind by 260, reducing the normal rotation per base pair from 360 to 100. In other words, ethidium decreases the twist of DNA.

TLS Online TPP Program

#Id: 4044

#Unit 2. Cellular Organization

In G-banding, chromosomes are first gently heated and then exposed to Giemsa stain; this DNA dye preferentially darkens certain regions to produce alternating dark and light G bands. Each G band is a very large segment of DNA from 1 to 10 Mb in length, containing many loops. With high-resolution G-banding techniques, a standard diploid human karyotype of 46 chromosomes is seen to contain hundreds of dark and light G bands. Not used in plants.

TLS Online TPP Program

#Id: 5328

#Unit 7. System Physiology – Animal

Rapid Ventricular Filling

ventricular pressure falls to its lowest level (below atrial pressure), the AV valve opens.