If two different animal species are found to go through equivalent stages of embryonic development until the very last stage, which conclusion would this phenomenon support? a. the two animal species are very closely related. b. the two animal species are both mammals. c. the two animal species have identical dna. d. the two animal species do not share a common ancestor.

Match the following terms describing electrical events with the correct phases of the cardiac cycle. the ventricular muscle cells depolarize at the start of this phase. during this phase, na+ entry through the funny channels causes the pacemaker potential of sa nodal cells to gradually become less negative until it reaches threshold. the ventricular muscle cells repolarize right before this phase. the cytosolic concentration of calcium in the contractile cells of the ventricle is highest during this phase. a. isovolumetric relaxation b. ventricular ejection c. isovolumetric contraction d. ventricular filling

Twin boys have girlfriends one of the couples have a baby would the dna of the lil baby be the same as the couples dna bc the boys are identical twins

Were does condensation occur? a) hydroshereb) lithosherec) boishered) atmosphere