If you were to repeat the meselson stahl experiments, but rather than use n15 and n14, you use p32 and p31, how would the resulting dna bands present in the cscl gradient change? remember the initial culturing of bacteria is in the heavy isotope.

the menstrual cycle – higher tier. negative feedback mechanisms affect the production of hormones in the menstrual cycle. oestrogen also stimulates the release of lh (luteinising hormone) from the pituitary gland, which in turn controls the production of progesterone.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link:

examples of nucleic acids are deoxyribonucleic acid (dna) and ribonucleic acid (rna).