Ascientist wants to change the dna of a sexually reproducing organism and have the new dna present in every cell of the organism. in order to do this after fertilization, she would change the dna in which of the following?

testes of the father

placenta

zygote

ovaries of the mother

Where in the body can you find chemoreceptors? a. on the skin and ears, to detect pressure, touch, motion, and sound b. on the retina, to detect a single photon of light c. on the skin, to detect temperature or specific chemicals d. on the tongue and in the nose, to detect taste or odor

Nucleic acid certain protein cell membranes certain carbohydrates

What do nitrifying bacteria convert