Which experiment would not be considered an ecological study?
A) the effect of a housing development on a spotted salamander population in a vernal pool
B) the effect of changing availability of acorns on a population of squirrels
C) the effect of a red tide outbreak on sea birds in the area
D) the effect of a hormone on the rate of blood vessel formation
D
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Intracytoplasmic sperm injection is one technology for correcting which fertility issue?
a. A woman cannot produce viable eggs. b. A man makes sperm, but does not ejaculate properly or does not ejaculate enough sperm to allow fertilization. c. A woman has normal eggs but they cannot be fertilized. d. A man has non-viable sperm. e. A woman can produce eggs and they can go through fertilization, but none of the eggs can implant properly.
How would the hydrolysis of phosphodiester bonds impede the origin of life?
A. It would stop the formation of cell membranes. B. It would prevent the assembly of nucleic acids. C. It would digest amino acids. D. It would slow the rate of protein synthesis.
What do the mutations that are inherited by the cell's descendants initially form?
A. Cancer B. Tumor C. Proto-oncogenes D. Neoplasm E. Oncogene
Assume that the genes for tan body and bare wings are 15 map units apart on chromosome II in Drosophila. Assume also that a tan-bodied, bare-winged female was mated to a wild-type male and that the resulting F1 phenotypically wild-type females were mated
to tan-bodied, bare-winged males. Of 1000 offspring, what would be the expected of wild-type offspring, and in what numbers would they be expected? A) 8 B) 350 C) 75 D) 50 E) 425