The F2 progeny from a particular cross exhibit a modified dihybrid ratio of 9 : 7 (instead of 9 : 3 : 3 : 1). What phenotypic ratio would be expected from a testcross of the F1?

TLS Online TPP Program

#Question id: 22957

#SCPH28 | Zoology

floral organ development is controlled by overlapping expressions of A class , B class and C class genes in different whorls. In an Arabidopsis mutant, the floral whorls had following pattern:

Sepal àSepal àcarpel àcarpel 

Mutation in which one of the following class of gene causes above pattern.  

TLS Online TPP Program

#Question id: 4134

#SCPH28 | Zoology

The enzyme that attaches an amino acid to a tRNA (aminoacyl-tRNA synthetase):

TLS Online TPP Program

#Question id: 415

#SCPH05 I Biotechnology

Which one of the following compounds does not have a large negative free energy of hydrolysis?

TLS Online TPP Program

#Question id: 15878

#SCPH05 I Biotechnology

A vitamin which has been found to inhibit callus formation and improve growth and quality of shoots.

TLS Online TPP Program

#Question id: 9571

#SCPH06 I Botany

All homeostatic systems used by organisms to regulate body temperature are described by which of the following?