A bacterial histidine mutant was plated on minimal medium and a single colony grew. You decide to sequence the histidine biosynthetic gene of the revertant and discover that the original mutation is still present.  This colony must have been able grow due to a

TLS Online TPP Program

#Question id: 1571

#XL - S Microbiology

Double-stranded RNA (dsRNA) recognize by

TLS Online TPP Program

#Question id: 419

#XL - R Botany

Biological oxidation-reduction reactions never involve:

TLS Online TPP Program

#Question id: 1100

#XL - Q Biochemistry

Which of the following results would most likely be an immediate result of a growth factor binding to its receptor?

TLS Online TPP Program

#Question id: 11444

#XL - R Botany

Ecologist have proposed following explanation to lead maximize biodiversity at tropic.

A. Higher productivity in the tropics allows for more species present

 B. Old communities have greater species than younger community

 C. Natural enemies such as predators and parasite limit competition in the tropics, which allows more species to coexist

D. Very less intensity of disturbances in the tropics promote high succession diversity

TLS Online TPP Program

#Question id: 8718

#XL - S Microbiology

Which of the following would, if it had acted upon a gene, prevent this gene from acting as a reliable molecular clock?