Phylogenies can be used to test whether speciation has been sympatric or allopatric. Following figure shown a new species arises by allopatric speciation, its nearest relative will usually live in a different geographic area, such as in a nearby lake. Which of the following phylogenetic tree is correct?

TLS Online TPP Program

#Question id: 4348

#Unit 3. Fundamental Processes

Under what conditions does the trp repressor block transcription of the trp operon?

TLS Online TPP Program

#Question id: 5262

#Unit 8. Inheritance Biology

Which of the following characteristics is not true of a plasmid?

TLS Online TPP Program

#Question id: 742

#Unit 1. Molecules and their Interaction Relevant to Biology

Match the following

Conformation	Phi	Psi	Omega
A. Alpha helix	I. -57	P. -47	X. 180
B. B sheet	II. -135	Q. +135	Y. 0
C. Polyproline I	III. -83	R. +158
D. Polyproline II	IV. -78	S. +149

TLS Online TPP Program

#Question id: 4209

#Unit 3. Fundamental Processes

Tryptophan synthesis can be controlled by a process called attenuation in which the levels of tryptophan in the cell control translation by

TLS Online TPP Program

#Question id: 10143

#Unit 6. System Physiology – Plant

In the carbon assimilation reaction of photosynthesis, the biosynthesis of 1 molecules of glucose from the 6 molecules of carbon dioxide requires;