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The lagging strand of DNA is synthesized in chunks during replication. What are these called?
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- The principles of population genetics can be used to address issues in several fields. Which of these is NOT an example of this?a. determining protein interactions using a yeast two-hybrid systemb. evaluating inbreeding depression in zoo populationsc. identifying the likely source of DNA left at crime scenesd. calculating the risk of having an offspring with an inherited genetic disease
- While working with cultured mouse cells, a researcher unknowingly treated the cells with a mutagen that causes the deletion or insertion of individual nucleotides in DNA. Subsequently, she isolated and cultured a single cell from this group. She noticed that the progeny of this cell were not producing a certain protein and that this affected their survival.The mutation that resulted from her accident was probably ______. A) an amino acid substitution B) one that changed the triplet grouping of the genetic message C) an error in translation D) a loss in regulation of gene expression
- Which of these statements about microsatellites is TRUE?a. If you were to compare the microsatellites in several generations of the same family, you would find that all individuals have the same alleles. This is because microsatellites have low mutation rates.b. Microsatellites are primarily found in coding regions of DNA (exons); microsatellites rarely occur in noncoding DNA and introns.c. Discovering microsatellite loci in the genome of a species is done by performing a computer search of its complete genomic sequence.d. Microsatellites typically consist of repeating stretches of 10 base-pair sequences; microsatellites composed of shorter repeating sequences are very rare and not normally found in the genome.