MCQ
${F_1}$ hybrid is intermediate between the two parents. The phenomenon is
- ACodominance
- BDominace
- CBlending inheritance
- ✓Incomplete dominance

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$R$ - The salt concentration is $45 -50$ (parts per thousand) in the sea.
$I$. They inhibit ovulation and implantation
$II$. They alter the quality of cervical mucous to prevent or retard the entry of sperms
$III$. They prevent the ejaculated semen from entering the female vagina
$IV$. They inhibit spermatogenesis
| Column $-I$ | Column $-II$ |
| $(A)$ Citric acid | $(i)$ Trichoderma |
| $(B)$ Cyclosporin $A$ | $(ii)$ Clostridium |
| $(C)$ Statins | $(iii)$ Aspergillus |
| $(D)$ Butyric acid | $(iv)$ Monascus |