Question

5. Suppose we discovered a form of life like our own which utilized 20 amino acids, but had 6 nitrogeneous bases instead of the 4 our life uses. What would be the minimum length (i.e., number of base-pairs) of a codon which could represent all 20 currently used amino acids? 6. What evidence exists to support the idea that an ancestor of all present-day living organisms had a simpler genetic code in which the length of a codon was 2 base-pairs rather than 3? 7. What three conditions or ingredients are necessary for polymerization to occur? 8. There is an exception to the heredity generalism that genes are transferred only from ancestors to descendents. What is it? 9. This question concerns extremophiles. a. What evidence indicates thermophiles were the earliest life forms on the Earth? b. What are two general energy sources for extremophiles? c. What are two general sources of carbon for extremophiles?

Answer 1

6.

If the codon is 1 base long, than 6^1 = 6 amino acids will be formed.

If the codon is 2 bases long, than 6^2 = 36 amino acids will be formed.

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