Discuss the benefits and concerns of genetically engineered crops
What will be an ideal response?
Benefits: higher crop yields, more nutritious foods, less pesticide usage (BT corn), crops that can produce pharmaceuticals and vaccines. Concerns: pesticide resistance (BT corn), allergic reactions in people, death of desirable insects such as monarch butterflies (BT corn), unknown and long-term health effects. Note: These are concerns, not necessarily proven phenomena.
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There are three alleles controlling the ABO blood types. IA and IB are codominant genes so that the combination IAIB
produces the AB blood type. The third allele, i, is recessive to the other two alleles. Indicate which of these parents could produce the given child:Parents Child Yes or No
(a) A ´ AB B (b) A ´ O A (c) A ´ B O (d) A ´ AB O (e) A ´ AB B (f) B ´ B O (g) AB ´ AB A
Which of the following is an example of antiport?
-simultaneous movement of an amino acid and protons into the cell -simultaneous movement of an amino acid and protons out of the cell -coupling of the inward movement of water with the outward movement of protons -coupling of the inward movement of Na+ with the outward movement of Ca++ -none of the choices are correct.
A seven month fetus will have difficulty surviving outside of the mother because
a. it will have difficulty breathing and regulating body temperature. b. it is unable to suck and drink milk. c. its skin is not fully developed. d. its heart is not fully developed. e. the nervous system is too immature to keep the baby alive.
In humans, which of the following traits is affected by a single gene?
A. Skin color B. Adult height C. Eye color D. Red hair E. Eye shape