MCQ
Identify $X$ and $Y$


- A$X=H$, histone, $Y= DNA$
- ✓$X= DNA$ $Y=H_1$, Histone
- C$X=Histone$ $Y=H_1$, Histone
- D$X=DNA$ $Y$ =Histone octamer

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
| Disorder | Causative factor | Effected organ |
| (i) Rheumatoid arthritis | IgM | Joints |
| (ii) Ascariasis | Nematode | Scrotum and intestine |
| (iii) Pneumonia | Streptococcus | Neuromuscular junction |
| (iv) Ringworm | Epidermophyton | T-lymphocytes |