DNA is an example of a complex biological polymer called a nuclei acid. Nucleic acids are made up of many smaller sub units called nucleotides. The components of a DNA nucleotide are deoxyribose, phosphate group, nitrogen group. There are four possible bases in a DNA molecules which includes adenine, cytosine, guanine and tymine.
Missense mutations.
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The urea cycle also known as the o r n i t h i n e cycle is a cycle of biochemical reactions that produces you re a from ammonia this cycle occurs in u r e o t e l i c organisms
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Answer:
B.Gymnoperms produce male cones and female cones, and the pollen from a male cone fertilizes the egg inside a female cone.