In rabbit, spotted pattern is dominant over solid colour and short hair over angora . A F1 spotted short hair was test cross to solid colour angora stock. The cross produced

Spotted angora               - 26                        

Solid coloured angora     144

Spotted short hair            157                      

Solid colour short hair       23

What is the recombination percentage between  genes?

#Question id: 4375

#Unit 3. Fundamental Processes

Protein X is found to bind to a certain geneʹs promoter only when substance A is not present.  The gene can be transcribed in the presence of both X and A. It is not transcribed in the presence of X alone. Protein X is a/an __. Substance A is a/an __.

#Question id: 5393

#General Aptitude

The set of numbers (5, 6, 7, m, 6, 7, 8, n) has an arithmetic mean of 6 and mode (most frequently occurring number) of 7. Then m × n = ?

#Question id: 11940

#Unit 7. System Physiology – Animal

Which of the following is filtered most readily by the glomerular capillaries?

#Question id: 637

#Unit 1. Molecules and their Interaction Relevant to Biology

Effect of temperature on enzymatic catalysis is analysed by the rate v of a chemical reaction varies with temperature according to the Arrhenius Equation which explains the sensitivity of enzyme reactions to temperature. A plot to determination of the activation energy Ea involves

#Question id: 7233

#Unit 5. Developmental Biology

Following statements are regarding to the coordination of Dictyostelium discoideum stalk and spore maturation by cAMP.

A. In prestalk cells at the slug tip, cAMP is synthesized by ACR and can either be hydrolysed by RegA or bind to PKA to trigger stalk encapsulation, which normally occurs when the tip projects upward at the onset of fruiting body formation and loses ammonia (NH3) by gaseous diffusion.

B. NH3 inhibits PKA by indirectly activating cAMP hydrolysis via DhkC-RdeA mediated phosphorylation of RegA.

C. In prespore cells, PKA activation occurs as a consequence of a signalling cascade that is activated by SDF-3, which inhibits the synthesis of GABA by prespore cells.

D. Secreted GABA then acts on prestalk cells to induce the cell-surface exposure of the serine protease domain of the ABC transporter TagC.

E. GABA also acts on prespore cells to induce secretion of AcbA, which in turn is cleaved by the TagC protease to produce the peptide SDF-2.

F. SDF-2 next activates the histidine phosphatase activity of DhkA, causing activation of cAMP hydrolysis by RegA. This allows cAMP to accumulate and activate PKA, which in turn induces spore encapsulation.

Which of the following combinations are correct?