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The synthesis of a polypeptide occurs primarily during which stage of translation?

At the end of meiosis I. . . (Choose the best answer)

Operon Mutants. Scientists have isolated a variety of different mutations which affect E. coli’s ability to effectively metabolize lactose.  Record the effect of each of the following mutations in order to complete the table.   # Description Result 1 lacI gene mutated so that lacI protein is not produced. (e.g. a Mutation in the lacI promoter) [blank1] 2 lacP promoter is mutated so that RNA polymerase cannot bind. [blank2] 3 Lactose permease is not produced due to a mutated ATG start codon in the lacY gene. [blank3] 4 lacI gene mutated such that the repressor is produced but that it cannot bind to the operator. (e.g. a mutation in the DNA binding region) [blank4] 5 A mutation in the lacI promoter which vastly increases the amount of repressor that is present. [blank5] 6 lac operator is mutated so that it can no longer bind to the repressor. [blank6]

Use the following character matrix to build a phylogeny and then answer the following question about the tree you built. Question: Species 2 is most closely related to which of the following species (You might mark more than one response):   Trait A Trait B Trait C Trait D Trait E Trait F Trait G Species 1 0 0 1 0 0 1 0 Species 2 0 0 1 1 0 0 1 Species 3 1 1 1 0 0 0 1 Species 4 1 1 1 0 0 0 1 Species 5 1 0 1 0 1 0 1 Species 6 1 0 1 0 1 0 1 Outgroup 0 0 0 0 0 0 0

Which parts of the nucleotide-excision repair mechanism assist in the physical cutting and removal of nucleotides? I.       UvrAII.      UvrBIII.     UvrCIV.     UvrD

4A. (8 pts) Match the definitions with the appropriate type of bias or effect shown on the right.

Which of the following is directly involved in splicing mRNAs?

Assuming that the drawing above corresponds to a DNA replication fork in the bacterium, E. coli, identify each of the parts labeled below.  Note:  Question C is asking about the polarity label of the strand’s end touched by the corner of the shaded box containing the letter “C” A. [answerA]  B. [answerB]  C. [answerC] D. [answerD] E. [answerE] F. [answerF]

Which of the following statements about sex in a biological context are not true:

Which type of science denial demands unrealistic standards of certainty before acting on the available science?