In a study of tree dispersion in a forest, we divided the forest into 1 sq km grid cells, choose 50 of them at random, and counted the number of trees in each cell. The means to variance ratio of the counts of trees per cell was much less than 1. What does this tell us about the spatial distribution of the trees?

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#Question id: 28162

#Unit 13. Methods in Biology

Which of the following method for the purification of plant DNA, which forms an insoluble complex with nucleic acids.

TLS Online TPP Program

#Question id: 28163

#Unit 13. Methods in Biology

Which of the following is component belong to LB medium involves in  Growing and harvesting a bacterial culture

a. Tryptone

b. Yeast extract

c. NaCI

d. Glucose

TLS Online TPP Program

#Question id: 28164

#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 correct formula is:

TLS Online TPP Program

#Question id: 28165

#Unit 13. Methods in Biology

Q. Arrange the steps of cloning and selection in YAC vector

a. BamHI digestion creates linear chromosome with telomeric ends.

b. Transformation

c. EcoRI digestion creates two arms, each with a selectable marker (X or Y).

d. Selection on the basis of marker

TLS Online TPP Program

#Question id: 28166

#Unit 13. Methods in Biology

The stability of YAC clones increases with the length of the cloned DNA segment, what is the minimum length require for stability as normal cellular chromosomes

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#Question id: 31321

#Unit 13. Methods in Biology

Generating a library for 140 kb eukaryotic genomic DNA fragments, while giving due consideration to size as well as stability of insert?