What does the molecular characterization of the thalassemias Hb Lepore and Hb Kenya tell us about the origin of these mutations?
What will be an ideal response?
Ans: Both of these mutants have fusion hemoglobins with deletions. Hb Lepore has the N-terminal sequence of hemoglobin ? joined to the C-terminal sequence of ?. Hb Kenya has the N-terminal sequence of the A? gene and the C-terminal sequence of the ? gene. Both of these illustrate that unequal crossing over can occur between distantly related genes, and that crossing over between linked genes can result in deletion.
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How does phosphorus enter the biological portion of the cycle?
a. Land plants take up dissolved phosphate from the soil water. b. Bacteria fix phosphate from the atmosphere. c. Consumers eat phosphate containing soil. d. Bacteria fix phosphate from water. e. Erosion of rocks moves phosphate into water, which consumers drink.
Can you distinguish between the chromatograms of an Aa individual and an AA individual?
a. Yes b. No
In what order would a vaccination needle pass through the layers of the skin?
a. dermis-hypodermis-epidermis b. dermis-epidermis-hypodermis c. hypodermis-dermis-epidermis d. epidermis-dermis-hypodermis
e. epidermis-hypodermis-dermisThe words simple, complete, and compound are all used to describe
a. shapes of bones. b. formation of bone architecture. c. bone remodeling. d. types of bone fractures. e. kinds of joints.