You are a lab assistant working with drosophila. you suspect that vestigial-winged flies may have contaminated a vial of wild-type flies. you know that vestigial wings are recessive to the wild type. the best way to tell whether a male fly with normal wings taken from the questionable vial is homozygous wild type is to mate it to females that you know are the male is homozygous wild type if

the oxygenated blood then leaves the lungs through pulmonary veins, which return it to the left heart, completing the pulmonary cycle. this blood then enters the left atrium, which pumps it through the mitral valve into the left ventricle. from the left ventricle, the blood passes through the aortic valve to the aorta.

deoxygenated blood leaves through the right ventricle through the pulmonary artery. from the right atrium, the blood is pumped through the tricuspid valve (or right atrioventricular valve), into the right ventricle.

is this for the e2020 class

a and c are the answeres

answer >   yes we do, women; have three holes, urethral opening(pee hole, vagina, and the women pee/girls pee out of the urethra like the men do; only they have a single opening to pee/ejaculate.   (sorry if i'm too forward with this, but this is for a biology class, isn't it? )

hope that !         : )