Biology

Biology, 27.07.2019 17:30, jjjoooorrrrddddaannn

What happens when cells cannot repair the damage caused by a mutagen a) the dna base sequence changes permanently b) the dna base sequence is not affected c) the organism is not affected d) the organism is affected temorarily

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Biology, 13.10.2019 00:10, carlshiabrown

Impacts of mutations on proteins (pls ) 1. what is a mutagen? what is a mutation? 2. when the mutation caused the addition of one base into the dna sequence, there was one base (a g) left over at the end. does this one base code for an amino acid? why or why not? 3. compare a normal dna sequence to the mutated dna sequence. is the entire sequence of dna different? explain 4. compare a normal protein to a mutated protein. is the entire protein different? explain. 5. predict how this small change could impact the function of the protein with the mutation compared to the protein without?

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Biology, 19.10.2019 11:30, tntaylor862

Agene has a base sequence that begins with taa cta tga cgy cg. 1-what rna sequence would be produced during transcription? 2-what are the first four amino acids coded by this sequence ? 3-the gene has a frame shift mutation, where the fifth base in the sequence is deleted . write a new dna base sequence . 4-what is the new rna sequence ? 5- what are the first 3 amino acids coded by this new mutated sequence ? 6-how does the correct amino acid sequence compare to the mutated sequence ?

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Biology, 12.11.2019 22:31, pareshrr

Depurination of purine bases results in an apurinic site. assume a single depurination event occurs in the gc base pair of the sequence below and is not repaired. then, if two rounds of replication occur, which of the following dna sequences will exist after two rounds of replication? remember that when dna polymerases encounter an apurinic site, most often an a is incorporated into the newly synthesized strand. assume this is true for the sequence below. select one or more: which repair mechanism(s) involve(s) the removal of a single nucleotide? select one or more: base excision repair proofreading repair mismatch repair nucleotide excision repair an alteration in the dna from an at base pair to a ta base pair is called a select one: transversion transition which of the following mutations does not lead to a change in the amino acid sequence of the gene product? select one: silent loss of function missense neutral nonsense

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