Proterozoic era characterized by___

a) Origin of life

b) Fossils of blue green algae

c) Most invertebrate evolved

d) First gymnosperm

e) Abundance of marine algae

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#Question id: 17078

#SCPH01 Biochemistry

In HGPRT negative cells which pathway is blocked of nucleotide synthesis

TLS Online TPP Program

#Question id: 14517

#SCPH01 Biochemistry

The probability that a certain beginner at golf gets a good shot if he uses the correct club is 1/3 and the probability of a good shot with an incorrect club is 1/4. In his bag are 5 different clubs, only one of which is correct for the shot in question. If he chooses a club at random and takes a stroke, the probability that he gets a good shot is

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#Question id: 7017

#SCPH01 Biochemistry

During tetrapod limb development, proliferative “progress zone” is covered by:

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#Question id: 13066

#SCPH06 I Botany

Precision will be reduced, but yield will be increased Optimisation of a PCR reaction is often a compromise between the competing demands for precision, efficiency and yield. Although the specific effects may vary, generally, increasing the annealing temperature will increase non-specific primer binding and reduce precision. Increasing the length of the elongation phase will reduce the proportion of incomplete newly-synthesised strands and therefore increase yield. In this case, the potential effect on efficiency is unclear. Increasing the elongation phase would increase the reaction time, but the time taken to ramp down to a lower annealing temperature would be reduced.

Which of the following is a codominant marker?

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#Question id: 2958

#SCPH01 Biochemistry

Which of the following structures is not a feature of the mitotic chromosome?