MCQ
Genetic recombination occur through
- AMitosis and fertilization
- BMitosis and meiosis
- ✓Meiosis and fertilization
- DNone of the above
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$I.$ In microinjection method foreign $DNA$ is directly injected into the nucleus of animal cell or plant cell by using micro needles or micro pipettes
$II.$ Microinjection method is used in oocytes, eggs and embryo
$III.$ Electroporation is the formation of temporary pores in the plasma membrane of host cell by using lysozyme or calcium chloride
$IV.$ In chemical mediated gene transfer method certain chemicals such as $\mathrm{CO}_{2}$ help foreign $DNA$ to enter the host cell
Which of the statements given above are correct?
$I.$ Colostrum is recommended for the new borns because it is rich in antigens.
$II.$ Chikungunya is caused by a Gram negative bacterium.
$III.$ Tissue culture has proved useful in obtaining virus-free plants.
$I V.$ Beer is manufactured by distillation of fermented grapes.
How many of the statement(s) is/are correct?
$I.$ Species diversity increases as we move away from the equator towards the poles.
$II.$ Stellar's sea cow and passenger pigeon got extinct due to overexploitation by man.
$III.$ Lantana and Eichhornia are invasive weed in India.
$IV$. The historic convention on biological diversity was held in $1992 .$
Choose the option containing correct statements.