RNA interference (RNAi) is a biological mechanism in which specific mRNA molecules are inactivated after binding to complementary double-stranded RNA (dsRNA). This process leads to the degradation of the mRNA or inhibition of its translation, thus preventing the expression of the corresponding gene.
| List I | List II | ||
|---|---|---|---|
| A | Two or more alternative forms of a gene | I | Back cross |
| B | Cross of F1 progeny with homozygous recessive parent | II | Ploidy |
| C | Cross of F progeny with any of the parents | III | Allele |
| D | Number of chromosome sets in plant | IV | Test cross |
If the value of \( \cos \alpha \) is \( \frac{\sqrt{3}}{2} \), then \( A + A = I \), where \[ A = \begin{bmatrix} \sin\alpha & -\cos\alpha \\ \cos\alpha & \sin\alpha \end{bmatrix}. \]