The repeating units that are used to form the helical DNA structure are called nucleotides.
Most organic compounds contain carbon and hydrogen.
The term for classifying and grouping organisms is Taxonomy. It is the science of defining and naming groups of biological organisms on the basis of shared characteristics.
In biology, Homology is defined as any characteristic of biological organisms that is derived from a common ancestor.
Hence, Homology is evidence of Common ancestry.
Dairy products like milk, cheese and yogurt are rich source of protein as well as calcium also.
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