A medical researcher is trying to develop a diagnostic technique for a disease that is characterized by replication of a particular chromosomal region. What would be the most appropriate technique?
A. white blood cell count
B. FISH
C. gene chip
D. genome sequencing
Answer: B
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Margarine is made by hydrogenating vegetable oils so that they take on the consistency of butter. Propose a chemical basis for this change from a liquid to a solid
A. Hydrogenation of fats changes them from saturated to unsaturated, which are more solid. B. Trans-fatty acids are changed from unsaturated to saturated, allowing them to solidify. C. Trans fatty acids are changed from saturated to unsaturated, allowing them to solidify. D. Hydrogenation of fats changes them from unsaturated to saturated, which are more solid.
Do you think that the altered amino acid sequence in sickle-cell betaglobin could alter the overall structure of hemoglobin? a. No, a single amino acid substitution is too small of a change to affect a largeprotein
b. Yes, a single amino acid substitution could radically affect the overall structure ofhemoglobin.
Which condition shows 100 percent penetrance?
a. sickle cell disease b. cystic fibrosis c. polydactyly d. camptodactyly e. eye color
All vertebrates have ________
A) hair and a backbone B) a skull and a backbone C) four limbs and a backbone D) scales and a backbone