Answer: a) proteins reflect DNA sequences, so scientists study proteins to look for genetic similarities and differences in organisms.
Explanation:
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The genetics of red hair appear to be associated with the melanocortin-1 receptor (MC1R), which is found on chromosome 16. Eighty percent of redheads have an MC1R gene variant.
I cannot find this source for this I'm sorry. I meant to add it but I lost the site
Brown algae is eukaryotic cell
