MCQ
Pattern baldness, moustaches and beard in human males are examples of
- ASex-determining traits
- BSex linked traits
- ✓Sex limited traits
- DSex differentiating traits
For e.g. beard and moustaches development in human beings is a sex limited character.
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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.
$R$ - tet$^R$ gene has not recognition site for Hind $III$.