MCQ
Down’s syndrome is due to:
- ACrossing over.
- BLinkage.
- CSex$-$linked inheritance.
- ✓Non$-$disjunction of chromosomes.
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Reason : This happens because of the presence of $hCG$ in the blood of females.
$(1)$ End of process of oogenesis
$(2)$ Induces the completion of the second meiotic division
$(3)$ The corpus luteum degenerates
$(4)$ Signals for maintain progesterone level in blood
$(5)$ Formation of zygote