I believe it is called Human Sexual Response cycle.
Explain how amino acid sequence data can help scientists infer patterns of evolutionary relationships between species. ... A gene's DNA sequence determines the order of amino acids that make up a protein, so changes in the DNA sequence often result in changes in the amino acid sequence as well.
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The key difference between cell and atom is that a cell is made of molecules whereas atoms make up molecules. Cells are the smallest functioning unit in a living organism. ... Hence, an atom is the smallest unit of matter.
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C. the AV node will usually become the pacemaker for the heart