TH.4 My favorite class

My favorite class is biology. I like this subject from high school. Especially, I am interested about gene. This is very small substance, but it composes human. I think it's very wonderful. The gene is two patterns. There are RNA and DNA. RNA is abbreviation of Ribonucleic Acid. This is formed by four base, phosphoric acid and ribose. The four bases are adenine, uracil, guanine, and cytosine. RNA is concerned with virus. And, DNA is abbreviation of Deoxyribo Nucleic Acid. This is formed by four base, phosphoric acid and deoxyribose. The four isn't same to RNA. They are adenine, thymine, guanine, and cytosine. DNA is very important substance to formed human. Now, I have biology this tarm, I'm glad to study about gene.

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