MCQ
Choose example of man-made ecosystem.
- ADesert
- BForest
- ✓Crop fields
- DRiver
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Label $A, B$ and $C$
Reason : Sex in humans is a polygenic trait depending upon a cumulative effect of some genes on $X-$ chromosome and some on $Y-$ chromosome.