3-year-old 50-year-old 31. IN THIS PARTICULAR CASE STUDY: a. The three-year twin

Question

3-year-old 50-year-old 31. IN THIS PARTICULAR CASE STUDY: a. The three-year twins are monozygotic, whereas the 50-year old twin:s are dizygotic b. The three year old twins are dizygotic, whereas the 50-year old twins are monozygotic c.The fifty-year old twins have undergone a greater number of epigenetic changes over time d. A and c e. B and o 32. According to the gel, the: a fragment toward the bottom of the gel is longer than the fragment b. fragment toward the bottom of the gel is shorter than the fragment e. second fragment down for 3-years is actually the same size as the d Twins A and B (50 yr olds) are the same twins that are depicted are above it above it second arrow down for the 50 year-old Twin B three-year olds. None of the above

Explanation / Answer

31) Both the twins are monozygotic twins. The 50 year older twins exhibit a large number of differential bands which is due to abundant changes in the pattern of DNA methylation. The 50-year-old exhibit greater number of epigenetic changes over time. So, the answer is c

32) Low molecular weight bands migrate to a larger distance in the gel. So, the fragment towards the bottom of the gel is shorter than the fragment above it. So, the answer is b

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