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TLS Online TPP Program

#Question id: 15411

Both X-linked genes and extranuclear inheritance produce different results in reciprocal crosses. How can you distinguish between them?

#Unit 8. Inheritance Biology
  1. Extranuclear traits can be transmitted from an unaffected mother to an affected son
  2. Extranuclear traits can be transmitted from an affected mother to an affected offspring.
  3. Extranuclear traits cannot be transmitted from father to son.
  4. None of these.
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TLS Online TPP Program

#Question id: 5128

#Unit 5. Developmental Biology

During lens formation in the Xenopus, the following statements have been proposed. Which statement is incorrect?
TLS Online TPP Program

#Question id: 10968

#Unit 7. System Physiology – Animal

Which of the following is TRUE concerning erythroblastosis fetalis (hemolytic disease of the newborn, HDN)?
TLS Online TPP Program

#Question id: 32357

#Unit 1. Molecules and their Interaction Relevant to Biology

There are two classes of aldolases such as;
A) Class I aldolases B) Class II aldolases
i) Found in animals and plants
ii) Found in fungi and bacteria
iii) formation of protonated Schiff base on enzyme and its active site contain lysine residue
iv) do not form the Schiff base intermediate and a zinc ion at the active site is coordinated with the carbonyl oxygen at C-2

In which of the following option is the given enzyme with its correct statements?
TLS Online TPP Program

#Question id: 13064

#Unit 13. Methods in Biology

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 techniques doesn’t involve use of a secondary antibody?
TLS Online TPP Program

#Question id: 31276

#Unit 2. Cellular Organization

Ubiquitin protein-ligase APC/CCdc20  performs various functions. Which of the following is incorrect about the function of APC/CCdc20 ?