Question

wht is selection marker_??​

Answer 1

Answer:

$\underline \mathscr \purple{Question \: : - }$

wht is selection marker_??

$\underline \mathscr \purple{Answer \: : - }$

Selectable marker: Helps in identifying and eliminating non-transformants and selectively permitting the growth of the transformants. Normally, the genes encoding resistance to antibiotics such as ampicillin, chloramphenicol, tetracycline or kanamycin, etc., are considered useful selectable markers for E.coli. The normal E.coli cells do not carry resistance against any of these antibiotics. Also, the gene lac Z coding for B-galactosidase enzyme may also be used as a selection basis. This enzyme utilises its substrate to produce a blue-coloured product. Therefore, the substrate for B-galactosidase is chromogenic (colour-producing).

Answer 2

Answer:

A selectable marker is a gene introduced into a cell, especially a bacterium or to cells in culture, that confers a trait suitable for artificial selection.

Explanation:

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