Progeria is a genetic disorder that causes numerous symptoms that resemble premature aging in patients. Progeria is caused by a dominant allele, and it always results in fatality before sexual maturity. Which of the following statements must be true about progeria?
What will be an ideal response?
Every case of progeria must be caused by a new mutation.
You might also like to view...
People who can taste PTC are more likely than non-tasters to dislike broccoli and Brussels sprouts
a. True b. False
Which strategy is most effective for larger cells to have an effective surface area to volume ratio?
a. locomotion b. being short and fat c. having thin, finger-like projections d. having a thinner plasma membrane e. having a completely spherical shape
Misting tomato plants with wintergreen tea can help prevent mosaic virus from infecting the plant. How?
What will be an ideal response?
A researcher is studying eukaryotic cells that shows an abnormal pattern of surface glycosylation. The researcher determines that these cells have normal levels of glycolipids and integral membrane proteins with O-linked glycosylation. The researcher discovers that there are no N-linked glycosylated proteins on the cell surface and unusually high levels of glycosylated in the ER membrane. What is a reasonable hypothesis to explain this observation?
A. the cell is defective in synthesizing of carbohydrates B. the cell has a defect in its ER localization signal C. the cell is defective in assembling carbohydrate trees D. the cell has a defect in its protein sorting pathway E. the cell has a defective oligosaccharide transferase