You perform a series of experiments on the synthesis of the pituitary hormone prolactin, which is a single polypeptide chain 199 amino acids long. the mrna coding for prolactin is translated in a cell-free protein synthesizing system containing ribosomes, amino acids, trnas, aminoacyl-trna synthetases, atp, gtp, and the appropriate initiation, elongation, and termination factors. under these conditions, a polypeptide chain 227 amino acids long is produced.

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Explanation:

the cladogram shown here shows similarities and differences among several classes of vertebrates. anatomically, the four have limb structure as their common ancestor. we might separate the mammals from the other three classes because they a) divergent; do not lay eggs b) identical; are warm-blooded c) varied; a four chambered heart d) homologous; have mammary glands

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