question archive 1)Evolution accounts for the unity and diversity of life, and the continuity of life is based on heritable information in the form of DNA
1)Evolution accounts for the unity and diversity of life, and the continuity of life is based on heritable information in the form of DNA
Subject:ChemistryPrice: Bought3
1)Evolution accounts for the unity and diversity of life, and the continuity of life is based on heritable information in the form of DNA. In a short essay (100-150 words), discuss how the fidelity with which DNA is inherited is related to the processes of evolution.
2)Knowing that the genetic code is almost universal, a scientist uses molecular biological methods to insert the human β-globin gene into bacterial cells, hoping the cells will express it and synthesize functional β-globin protein. Instead, the protein produced is nonfunctional and is found to contain many fewer amino acids than does β-globin made by a eukaryotic cell. Explain why.
3)Most amino acids are coded for by a set of similar codons. What evolutionary explanations can you give for this pattern?
4)Some mutations result in proteins that function well at one temperature but are nonfunctional at a different (usually higher) temperature. Siamese cats have such a "temperature sensitive" mutation in a gene encoding an enzyme that makes dark pigment in the fur. The mutation results in the breed's distinctive point markings and lighter body color.
5)An anticodon has the sequence GCG. What amino acid does this tRNA carry? What would be the effect of a mutation that changed the C of the anticodon to a G?
