1) How does position effect influence gene expression? a) The movement of the ge
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Question
1) How does position effect influence gene expression?
a) The movement of the genetic material on the chromosome by inversions or translocations may place a coding sequence near a new regulatory region, thus activating the expression of the gene.
b) The movement of the gene may place it into a region that is highly condensed (heterochromatin).
c) The movement of a gene may remove it from its normal promoter, thus silencing the gene.
d) All of the above answers are correct
2) Identifies daughter strands by methylation.
a) Recombinational repair
b) Direct repair
c) Base excision repair
d) Mismatch repair
e) Nucleotide excision repair
f) Nonhomologous end joining (NHEJ)
a) The movement of the genetic material on the chromosome by inversions or translocations may place a coding sequence near a new regulatory region, thus activating the expression of the gene.
b) The movement of the gene may place it into a region that is highly condensed (heterochromatin).
c) The movement of a gene may remove it from its normal promoter, thus silencing the gene.
d) All of the above answers are correct
Explanation / Answer
1. All the above statements are correct - Because all the above said conditions occurs with position effect of gene expression.
2. Mismatch repair - In this phenomenon the mismatch occurred in the newly synthesized DNA due to error in replication or due to mutation due to recombination is repaired where the machinery identifies daughter strand based on its methylation.
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