MCQ
Seed ferns originated in
- ✓Carboniferous period
- BDevonian period
- CSilurian period
- DCretaceous period
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| Column $- I$ | Column $- II$ |
| $(1)$ Inheritance of two genes | $(a)\; ABO$ blood group |
| $(2)$ Incomplete dominance | $(b)\; 1:2:1$ |
| $(3)$ Codominance | $(c)\;9:3:3:1$ |
| $(4)$ Inheritance of one gene | $(d)\; 3:1$ |
$II.$ There is negative pressure in the lungs than the atmospheric pressure In which of the above two situations inspiration takes place? Choose the correct option accordingly?