DNA precipitation out of a mixture of biomolecules can be achieved by treatment with
Chilled ethanol
Methanol at room temperature
Chilled chloroform
Isopropanol
A.
Chilled ethanol
During the isolation of desired gene, chilled ethanol is used for the precipitation of DNA.
Match the following genes of the Lac operon with their respective products :
| A. i gene | (i) β-galactosidase |
| B. z gene | (ii) Permease |
| C. a gene | (iii) Repressor |
| D. y gene | (iv) Transacetylase |
Select the correct option
A - (iii); B - (i); C - (ii); D - (iv)
A - (iii); B - (i); C - (iv); D - (ii)
A - (iii); B - (i); C - (i); D - (ii)
A - (i); B - (iii); C - (ii); D - (iv)
Which of the following features of genetic code does allow bacteria to produce human insulin by recombinant DNA technology?
Genetic code is redundant
Genetic code is nearly universal
Genetic code is specific
Genetic code is not ambiguous
Purines found both in DNA and RNA are
Adenine and guanine
Guanine and cytosine
Cytosine and thymine
Adenine and thymine
