i believe the answer is A.) Tadpole
I think it is B. histones
Chromatin contains proteins called hemoproteins.
I hope this helps HilalSchair6e
<span>There are two major theories that will explain on research on colour vision. They are 1. the trichromatic theory also known as the Young-Helmholtz theory 2. opponent-process theory. These two theories explain processes that operate at different levels of the visual system.</span>
