Dna exists in chromatin form in the nucleus: letter a in the illustration. during mitosis and meiosis, chromatin undergoes a change. what is that change?

The skeletal system performs a variety of functions that are crucial to maintaining life processes. what function is performed in the bone marrow, but not in the ossified bones of the skeleton? a oxygen transportation c mineral storage b. muscle attachment d red blood cell production

Which of the following occurs most often in a population when genetic variation and overproduction are present? some organisms have a lower reproductive success than others. some organisms have a higher reproductive success than others. some organisms have no reproductive success. some organisms do not have genetic variation.

What are the formed elements (cell or parts of cell) in blood and what are their functions ?