IgA in seromucus secretions:

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#Question id: 19685

#Unit 13. Methods in Biology

The P-waves of ECG indicates:

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#Question id: 28378

#Unit 5. Developmental Biology

 Which of the following gene is activated in those bands of cells that receive little or no Even-skipped or Fushi tarazu protein, but which do contain Sloppy-paired

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#Question id: 10875

#Unit 10. Ecological Principles

When the population density of species P , then

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#Question id: 18956

#Unit 13. Methods in Biology

It is possible to calculate the number of clones that must be present in a gene library to give a probability of obtaining a particular DNA sequence. This formula is:

 

where N is the number of recombinants, P is the probability and f is the fraction of the genome in one insert. Thus for the E. coli DNA chromosome of 5 × 10 ⁶ bp andan insert size of 20 kb ( f = 0.004), the number of clones needed ( N ) would be 1 × 10 ³ ,with a probability of P will be

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#Question id: 15714

#Unit 12. Applied Biology

Which component in the medium is reported to counteract the inhibitory effect of auxin and promotes bud formation in the absence of cytokinin.