What is the sequence of structures through which a mammalian sperm passes after leaving the penis and before fusing with an ovum?

What advantages does a pedigree have over a written passage?

What is the membrane that sheath of schwann cell containing cytoplasm and nucleus that encloses myelin

Which of the following is an advantage of using embryonic stem cells in medical research? a. the use of embryonic stem cells is much less expensive than the use of adult stem cells. o b. no living tissue is damaged when scientists use embryonic stem cells. o c. embryonic stem cells are able to differentiate into a wider range of cells than adult stem cells. d. there is no controversy surrounding the use of embryonic stem cells.