20.4 21.3 are the correct answers
Answer:
TACGAT
Explanation:
Guanine matches with cytosine
adenine matches with thymine
<span>The answer is cysteine. This is a half essential proteinogenic amino acid with the formulation of HO₂CCHCH₂SH. It is prearranged by the codons UGU and UGC. The thiol side chain in cysteine frequently partakes in enzymatic responses, as a nucleophile.</span>
Photosphere,chromosphere and the corona