TLS Online TPP Program

#Question id: 4601


DDT was once considered a "silver bullet" that would permanently eradicate insect pests. Instead, DDT is largely useless against many insects. Which of these would have prevented this evolution of DDT resistance in insect pests?

#SCPH28 | Zoology
  1. All habitats should have received applications of DDT at about the same time.

  2. The frequency of DDT application should have been higher.

  3. None of the insect pests would have genetic variations that resulted in DDT resistance.

  4. DDT application should have been continual.

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TLS Online TPP Program

#Question id: 18607

#SCPH01 Biochemistry

The PCR consists of three defined sets of times and temperatures, termed steps
a) Denaturation at 94°C, for 0.5 min
b) Primer annealing at 55°C for 1.5 min
c) Extension at 72°C for 1 min
d) only denaturation and extension

TLS Online TPP Program

#Question id: 18607

#SCPH06 I Botany

The PCR consists of three defined sets of times and temperatures, termed steps
a) Denaturation at 94°C, for 0.5 min
b) Primer annealing at 55°C for 1.5 min
c) Extension at 72°C for 1 min
d) only denaturation and extension

TLS Online TPP Program

#Question id: 18608

#SCPH01 Biochemistry

In an experiment, A 5kb DNA undergoes PCR using primer, after electrophoresis instead getting a 5kb band, two set of PCR band are found of 5kb and 3kb, this is due to

TLS Online TPP Program

#Question id: 18608

#SCPH06 I Botany

In an experiment, A 5kb DNA undergoes PCR using primer, after electrophoresis instead getting a 5kb band, two set of PCR band are found of 5kb and 3kb, this is due to

TLS Online TPP Program

#Question id: 18609

#SCPH01 Biochemistry

An experiment performed using cell for replication and test tube for PCR by using two conditions of radio labelling
1) by radio labeling primer
2) by radio labeling dNTP
 the most possible result will be

TLS Online TPP Program

#Question id: 18609

#SCPH06 I Botany

An experiment performed using cell for replication and test tube for PCR by using two conditions of radio labelling
1) by radio labeling primer
2) by radio labeling dNTP
 the most possible result will be