With a microscope you examine some somatic cells from a woman and notice that

With a microscope you examine some somatic cells from

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34. With a microscope, you examine some somatic cells from a woman and notice that each nucleus has two Barr bodies. What can you infer about the in this individual? a. She is XXb. She is XXY but the Y chromosome lacks the SRY genec. She is XXXXd. She is XXXe. None of the above 35. Gene A is normally found on chromosome number 15 in humans. If amniocentesis reveals fetal cells containing gene A on chromosome 17, but not 15, the best explanation would be that: 36. It is proposed that a certain disorder affecting the inner ear is caused by mitochondrial DNA. Which of the following observations would be the most decisive evidence against this idea? 37.38. A sample of DNA is composed of 14% Cytosine. How much Thymine is present in the sample? Mock 3 8
39.E. colicells grown on 15N medium are transferred to 14N medium and allowed to grow for two more generations (two rounds of DNA replication). DNA extracted from these cells is centrifuged. What density distribution of DNA would you expect in this experiment? A) one high-density and one low-density band B) one intermediate-density band C) one high-density and one intermediate-density band D) one low-density and one intermediate-density band E) one low-density band 40. DNA polymerase adds nucleotides to the ______ of the leading strands, the _____ of the lagging strands 41. Which of the following mutations would be most likely to have a harmful effect on an organism? 42. After formation of a replication bubble which of the following is the correct sequence of enzymes used for the synthesis of the lagging DNA strand?

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