9. which explains how the advantage of genetic variation through sexual reproduction occurs?

a. one of each pair of chromosomes comes from each parent.
b. the union of sperm and egg occurs during meiosis.
c. meiosis occurs in all body cells also.
d. division of body cells results in a greater variety of traits.
e. sexual reproduction allows for a great number of offspring to be produced

Both male and female gametes are created during the process of meiosis. the formation of male gametes is called spermatogenesis. after telophase il of spermatogenesis, there would be are all genetically male gametes created that

Embryonic stem cells are cells derived from an embryo. these cells can be used to create new tissues for patients suffering from certain illnesses and disorders. which statement best summarizes why the use of embryonic stem cells could be seen as unethical? a. some people consider embryos to possess rights equal to those of fully developed human beings. b. extracting stem cells from embryos is a very energy-intensive process, which consumes resources that could be used elsewhere. c. embryos are difficult to obtain, so the monetary cost of using them for research outweighs their benefit. d. the process of extracting stem cells from embryos generates biohazardous waste that cannot be safely disposed of.

Name 3 injuries and two diseases that affect the skeletal system.