There is evidence that ray-finned fishes originally evolved

TLS Online TPP Program

#Question id: 2622

#SCPH28 | Zoology

The form of RNA polymerase that transcribes the glnA gene contains the

TLS Online TPP Program

#Question id: 4601

#SCPH06 I Botany

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?

TLS Online TPP Program

#Question id: 7291

#SCPH28 | Zoology

Five different genes are known to specify floral organ identity in Arabidopsis: APETALA1 (AP1), APETALA2 (AP2), APETALA3 (AP3), PISTILLATA (PI), and AGAMOUS (AG).

Which one of the following statement is incorrect?

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#Question id: 1548

#SCPH05 I Biotechnology

B-cell survival in the follicle is dependent on?

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#Question id: 13084

#SCPH01 Biochemistry

Statement: In a modified version of AFLP, the selection of fragments using biotin-streptavidin binding is avoided.

Explanations: I. The fragments are ligated to the appropriate adapters and used for PCR amplification using two AFLP primers, each primer having a single selection nucleotide; this is called preamplification step.

II. The PCR products from this preamplificated step are diluted and used as template for second PCR amplification.