Question

Question 15 2 pts Which of the following observations, critical to natural selection, are NOT credited to Charles Darwin? O A. Geological processes in the past and present are the same O B. Individuals in a population vary from one another O C. Variants in individuals are heritable OD. Some variants are better than others and survive Question 16 2 pts Which of the following statements about transfer RNA (TRNA) is correct? O A. TRNA seeks complementary triplet strands of mRNA codons O B. ERNA contains three nucleic acids that correspond to specific amino acids O C. ERNA assists in bringing amino acids together to form polypeptide chains O D. All of the above

Answer 1

15) Option A: Geological processes in the past and present are the same.

Charles Darwin is responsible for giving the theory of evolution and natural selection. The main idea behind Darwin's theory is descent with modification which explains that variations are heritable and natural selection and survival of the fittest is responsible for selection of favorable traits over other non-favorable ones. The observation that Geological processes in the past and present are the same is credited to Charles Lyell, a scottish geologist in his book, "Principles of Geology" in which he presented the idea that Earth was shaped by the same natural processes still in operation today, operating at similar intensities, i.e., the geological processes are same in the past and present.

16) Option D: All of the above.

tRNA contains complimentary triplet codon to mRNA. It attracts the specific amino acid associated with that triplet codon and brings it to the complementary strand of mRNA on the ribosome where it facilitates the association of amino acids via peptide bond to create the polypeptide chain.