Chapter 206 of 2363 min read
Blood, blood groups and lymph
Why this is asked: Rh incompatibility is a second-pregnancy problem, not a first one: an Rh-negative mother is not sensitised until her first Rh-positive baby's blood mixes with hers at delivery, so it is the second Rh-positive pregnancy onward that risks erythroblastosis foetalis, once anti-Rh antibodies already exist to cross the placenta — a timing detail NEET tests directly.
This chapter is part of a paid pack
A sample of the book is free to read — the rest, including this chapter, unlocks with full access.
See pricingOpen this in the full syllabus view · Zoology