TLS Online TPP Program

#Question id: 13060


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.
In blue white screening insertional activation of Beta-D-galactosidase will give rise to

#SCPH01 Biochemistry
  1. White colonies
  2. Blue colonies
  3. No colonies
  4. Both blue and white colonies
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TLS Online TPP Program

#Question id: 4758

#SCPH01 Biochemistry

The allele l in human population is recessive lethal and x chromosome linked. If a female is heterozygous for l allele marries with normal male. What will be interpretation correct?

TLS Online TPP Program

#Question id: 4758

#SCPH12 I Genetics

The allele l in human population is recessive lethal and x chromosome linked. If a female is heterozygous for l allele marries with normal male. What will be interpretation correct?

TLS Online TPP Program

#Question id: 4759

#SCPH01 Biochemistry

which of the following is not a mechanism for sex determination?

TLS Online TPP Program

#Question id: 4759

#SCPH12 I Genetics

which of the following is not a mechanism for sex determination?

TLS Online TPP Program

#Question id: 4760

#SCPH01 Biochemistry

you set up a cross between true breeding wild type male fruit flies and true breeding female flies with a yellow body color. you notice in the f1 generation that half the flies, specifically all the males, have yellow body color while the females are wild type (gray). which of the following explanations is the most likely?

TLS Online TPP Program

#Question id: 4760

#SCPH12 I Genetics

you set up a cross between true breeding wild type male fruit flies and true breeding female flies with a yellow body color. you notice in the f1 generation that half the flies, specifically all the males, have yellow body color while the females are wild type (gray). which of the following explanations is the most likely?