Philadelphia chromosome generated by a translocation

between chromosomes 22 and 9

TLS Online TPP Program

#Id: 9430

#Unit 11. Evolution and Behavior

Bateman’s principle

In most cases, it is the male’s secondary sexual traits that are exaggerated.

This shows that sexual selection is more common and intense on males than females

TLS Online TPP Program

#Id: 1173

#Unit 7. System Physiology – Animal

There are two types of photoreceptors:

Rods 

Cones

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#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: 2588

#Unit 13. Methods in Biology

In case of nested PCR, the inner primers have a lower annealing temperature than that of the outer pair. For the initial several cycles of PCR the higher denaturation and annealing temperatures are used; as a result, only the outer pair of primer is able to prime amplification. 

TLS Online TPP Program

#Id: 326

#Unit 1. Molecules and their Interaction Relevant to Biology

When blood glucose rises above 5 mM, hexokinase IV activity increases, but hexokinase I is already operating near Vmax and cannot respond to an increase in glucose concentration.