All sixty four codons were tested by making artificial mRNA and triplet codons by:
Correct answer: D. Marshall Nirenberg, Philip Leader, and Har Gobind Khorana
- A. Marshall Nirenberg
- B. Philip Leader
- C. Har Gobind Khorana
- D. Marshall Nirenberg, Philip Leader, and Har Gobind Khorana
Explanation
The correct answer is that Marshall Nirenberg, Philip Leader, and Har Gobind Khorana together conducted experiments involving the synthesis of artificial mRNA and triplet codons to test all 64 codons. These experiments were crucial in understanding the genetic code and how it directs protein synthesis. The other options, while mentioning scientists who were involved in genetic research, did not capture the collaborative effort required for this specific task.
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Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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