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
It is actually better if you have the same blood group.
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.
There is no disease caused by parents having the same ABO blood group.
yes probably. you dont have to have the same blood group as your siblings and even your parents, you could have the same blood group of any of your grandparents.
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!!