Then they are happy. "merry" means happy, though in some contexts it can imply they are drunk.
No; that will not cause AIDS or HIV.
Any two persons can get married. So yes.
is A positive blood group and AA blood group the same
There is no disease caused by parents having the same ABO blood group.
Absolutely ! If the father of each child has the same blood group - there is a likelihood the children will inherit the same blood group (but obviously different genetic fingerprints !)
Not necessarily.
absolutely
Yes, it is possible.
No, this is obvious that not because each human have a different blood group and if there will be a blood transfer, they will definitely need blood with the same group as they have!!
The same way you would do so if they had not had such an operation.
Yes, individuals with the same blood group can marry and have children. Blood group compatibility is not a factor that affects marriage or childbearing. However, it's important to consider other genetic factors and consult with a healthcare provider for any potential risks or considerations.
Yes if both have the same blood group , the child at birth will have trouble.