Answer:
The genetic code is the sequence of nucleotide bases in nucleic acids (DNA and RNA ) that code for amino acids. These gene codes not only determine the order of amino acids in a protein, but they also determine a protein's structure and function.
Explanation:
The study pushes back the clock on the origin of Earth's water by hundreds of millions of years, to around 4.6 billion years ago, when all the worlds of the inner solar system were still forming. Scientists had suspected that our planet formed dry, with high-energy impacts creating a molten surface on the infant Earth.
Answer: 4.6 billion years.
