What biological characteristics will the first proven aliens have?
17
1kṀ10419999
35%
Carbon-based biochemistry
28%
Amino acids and proteins
20%
Cells, but with a noticeably different structure
1.3%
Mostly made not of baryonic matter
5%
ATGC DNA
11%
What types of biological structures and processes will the first proven extra-terrestrial (alien) organisms likely have?
Is it similar to life on Earth with DNA as the genetic material, RNA as an intermediate molecule, specific amino acids used to build proteins?
Silicon-based biochemistry instead of carbon-based chemistry?
Chirality and molecular asymmetry opposite to most Earth organisms (left-handed vs right-handed molecules)?
Cellular structures radically different from prokaryotic and eukaryotic cells?
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