MCQ
Which gene was introduced in the first transgenic cow?
- ✓Human $\alpha$-lactalloumin
- B$a-1$-antitrypsin
- C$\beta-1$-antitrypsin
- D$Cry IAc$
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$I$. Each cell of sporogenous tissue in anther is capable of giving rise to microspore tetrad.
$II$. The pollen grain represent male gametophyte.
$III$. Pollen grains are usually triangular and $10-15 \mu m$ in diameter.
$IV$. Sporopollenin is one of the most resistance organic material which can be destroyed only by strong acids
and alkali.