Total number of genetic codes is:
Correct answer: C. 64
- A. 43
- B. 60
- C. 64
- D. 68
Explanation
The total number of possible genetic codes is 64. This is because there are 4 different nucleotides (A, C, G, and U) that can be arranged into codons of 3 nucleotides each. With 4 options for each of the three positions in a codon, there are 4^3 = 64 possible combinations.
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Chromosomes are DNA-protein structures that carry genes and become visible during cell division. Coverage includes chromatin, centromeres, sister chromatids, homologous chromosomes, chromosome number, and the distinction between diploid and haploid cells, with links to DNA replication, mitosis and meiosis.
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