yes
No, it is impossible to get an A-type from two O-types.
Yes, if both parents have the genotype AO, then the child can have the O from both parents, phenotype O
it is possible but the child can be a positive
No. Two rhesus-negative parents cannot have a rhesus-positive child.
No, two parents who are both blood type O positive cannot have a child who is blood type A positive. Blood type inheritance follows specific rules, and in this case, it is not possible for two O positive parents to have a child with blood type A positive.
if both parents have positive o blood their child must have positive o blood
There are no limitations on compatibility of parents based on blood type. Two O positive parents may have a child without any special concerns.
No.
No, two parents with O type blood cannot have a child with B type blood. This is because O is recessive - meaning in order to have type O blood, you need to have two O alleles. Therefore if both parents have O blood, all their children have to have O type blood. In order to have a child with B type blood, at least one parent needs to have B or AB type blood - in order to donate the B allele to the child.
o positive
No, two O positive parents cannot have an AB positive baby. Inheritance of blood type follows specific patterns, and a child cannot have a blood type that is not possible based on the parents' blood types.
Yes, two B positives can produce an O positive child.