If the codon AUC codes for the placement of the amino acid isoleucine, and GGU codes for the placement of glycine, which of these sequences codes for glycine-isoleucine-isoleucine-glycine?
A. AUCGGUUGGCUA
B. GGUAUCCUAUGG
C. GGUAUCGGUAUC
D. GGUAUCAUCGGU
D. GGUAUCAUCGGU
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(Please choose from the lettered responses below.) Phylogenetic trees help us understand: 1. the genetic relationships among a species. 2. the evolutionary relationships among a species. 3. the relationships of symmetry among related species. 4. the level
A. 1 and 2 B. 2 and 3 C. 2 and 4 D. 3 and 4
Which variation could be subject to natural selection?
A) A dog with short legs due to malnutrition is able to crawl into holes better than his littermates. B) A tree is not infested by a ground-dwelling beetle when the homeowner cuts the lower branches. C) A hyena is born with a spotted fur pattern that allows it to hide in the grass better than its littermates. D) A pigeon learns that when its keeper comes near it will get fed.
The first compound microscope was a simple tube with two lenses: The eyepiece (ocular lens) and the ________ lens.
Fill in the blank(s) with the appropriate word(s).
Why is it sometimes a disadvantage to take aspirin to reduce a fever?
A) Aspirin makes you irritable and fatigued. B) Aspirin reduces the fever and stimulates a dangerous inflammatory response. C) Aspirin reduces the production of toxins so that you feel better, even though you are still sick and need to rest. D) Aspirin reduces the fever and therefore decreases the activity of phagocytic white blood cells.