The classic experiments performed by Creighton and McClintock in Maize
A. provided the initial evidence for genetic recombination.
B. provided evidence that genes located on the same chromosome do not assort independently.
C. allowed for the establishment of the first genetic map.
D. provided evidence for the physical exchange of genetic material between homologues.
D. provided evidence for the physical exchange of genetic material between homologues.
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The host range of a virus is determined by
A. the type of genetic information the virus contains. B. All of the answer choices are correct. C. the shape of the virus. D. specific receptors on cells it infects. E. the particular life cycle of the virus.
The mutated gene that causes cystic fibrosis is ____
a. CFTR b. CRFT c. CTFR d. CRTF e. CFRT
The muscles of your lower leg are arranged in antagonistic pairs so that you
A) can both flex and extend your leg. B) can stand upright. C) obtain a stronger contraction than you would with a single muscle. D) have a backup when one muscle is not strong enough.
You buy a new house and the front yard has some really nice rose bushes, but they are surrounded by lots of weeds! You don't really want to try and dig them out by hand and your nice new neighbor comes over with a bottle of weed killer. He says it shouldn't kill your roses, but you, knowing that weeds and rose are pretty similar physiologically decide to do some research. You find out the active ingredient in the weed killer causes the stomata close when in contact with the chemical.
What would be the results of the chemical being sprayed on your roses? Explain which parts of photosynthesis would be affected, what those effects would be, and how would the plant be affected? Would it be likely to hurt your roses?