please answer me this question with your own thoughts n Don't copy from Google
why do 2nd born child onwards of a homozygous -ve mother(- -) and homozygous +ve father(+ +) dies but 1st born child survives
Answers
Mother (-ve), First child (+ve)
During delivery of first child some amount of foetal blood enters into maternal (mother) blood.Then mother's blood cells recognises the D-bodies and immune system of mother become weak.
During second child birth during the flow of food and blood these Anti-D-anti bodies enter into second child and causes destruction of foetal RBC.This is called as erythroblastosis foetalis.
The baby may born by jaundice or other disabilities.
To stop this, In 7th month of second pregnancy (Rh-D) Rhogam-D injection is given to mother.
Answer:
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Explanation: