Awoman with type a blood (whose father was type o) has children with a man that has type o blood. both individuals are heterozygous for the mn antigen. recall that mn blood group antigens are independent of the abo locus, and that the alleles are codominant.

the three components of a nucleotide are the nitrogenous base, the phosphate group and the five-carbon sugar.

evidence and logical support is essential for a scientist to do in order to maintain credibility. this is because no one can believe without any logic and without any evidence.hence a scientist can maintain credibility by proving himself and by answering logically so experiments prove very beneficial. logical hypothesis give conclusion which is acceptable. therefore, there are two main factors to maintain credibility by a scientist is evidence and logical support.