William discovered that two modern day species have very similar DNA . He concludes that two species are closely related . What type of evidence did William most likely use to reach his conclusion?

Which macromolecule catalyzes chemical reactions this be considered enzyme chemical reactions thus he considering enzymes

You have just sequenced a new protein found in mice and observe that sulfur-containing cysteine residues occur at regular intervals. what is the significance of this finding? it will be important to include cysteine in the diet of the mice. cysteine residues are required for the formation of α helices and β pleated sheets. cysteine residues are involved in disulfide bridges that form tertiary structure. cysteine causes bends, or angles, to occur in the tertiary structure of proteins.

What type of appendages do sponges cnidarians roundworms annelids mollusks arthropods echinoderms and vertebrate have? jointed, not jointed, absent