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#Question id: 29050
#Unit 10. Ecological Principles
Which of the following cells can withstand temperatures down to–38°C?
TLS Online TPP Program
#Question id: 11651
#Unit 10. Ecological Principles
Succession on a newly exposed site that was not previously occupied by soil and vegetation refers to
TLS Online TPP Program
#Question id: 1792
#Unit 4. Cell Communication and Cell Signaling
Suppression of Th2 by Th1 cells can be mediated by:
TLS Online TPP Program
#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
TLS Online TPP Program
#Question id: 5743
#Unit 8. Inheritance Biology
Euploidy is