Which statement is mostly likely to apply to a cell that has dna within it cytoplasm

Prior to the development of dna fingerprinting, blood type could be used to determine possible parentage. although it might prove someone was not a parent, it could not show if someone was positively the parent, only that he or she might be a parent. which of the following is a true statement that can be made about parentage based on blood typing?

Vessels draining the myocardium of the heart, open primarily ,into which chamber?

Achange in which factor will affect the rate of reaction only when gases are involved? temperature pressure surface area concentration