Name the four functions of the cardiovascular system.

How are mutations continually being generated in a population (what are some of the causes of mutatuions? ) explain

If a human has 23 pairs of chromosomes in every muscle cell of its body how many chromosomes will be in a human egg or sperm

Anybody know this. a haplontic cycle animal initially reproduces by: mitosis binary fission isogamous fertilization meiosis