secondary succession is the ecological succession that occurs after the initial succession has been disrupted and some plants and animals still exist. It is usually faster than primary succession
Answer:
DNA: Three nucleotides encode an amino acid. Proteins are built from a basic set of 20 amino acids, but there are only four bases. Simple calculations show that a minimum of three bases is required to encode at least 20 amino acids.
RNA: You can think of the sequences of bases in the coding strand of DNA or in messenger RNA as coded instructions for building protein chains out of amino acids. There are 20 amino acids used in making proteins, but only four different bases to be used to code for them. Obviously one base can't code for one amino acid.
<span>The chromosomes are lined up on the cell's equator during the Metaphase stage of mitosis. Almost immediately upon the cells lining up, the Anaphase stage begins, anaphase can be described as a migration of the two chromatids of each chromosome to the opposite spindle poles as they are pulled apart by the mitotic apparatus.</span>
