MCQ
He demonstrated that life comes only frompre existing life
- AUrey
- BMiller
- COparin
- ✓Louis pasteur
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| Alveolar Air | Atmospheric Air | |
| $p O _{2}$ | $ X$ | $ Y$ |
| $pCO _{2}$ | $A$ | $B$ |

$(i)$ Queen Elizabeth shows a number of haemophilic descendents.
$(ii)$ Variation in blood group prevalences due to incomplete dominance.
$(iii)$ Drosophila has three pairs of autosomal chromosomes.
$(iv)$ In birds, female is heterozygous.