MCQ
Electron microscope has a high resolution power. This is due to:
- AElectromagnetic lenses.
- BVery low wavelength of electron beam.
- CLow wavelength of light source used.
- DHigh numerical aperture of glass lenses used.
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| Column $I$ | Column $II$ | ||
| $A$ | Chromosomes are moved to spindle equator |
$I$ | Pachytene |
| $B$ | Centromere splits and chromatids move apart |
$II$ | Zygotene |
| $C$ | Pairing between homologous chromosomes takes place |
$III$ | Anaphase |
| $D$ | Crossing between homologous chromosomes |
$IV$ | Metaphase |
$I.$ Cyclic $AMP$ $II.$ $I P_{3}$ $III.$ C $a^{2+i i}$
The correct option is