Once they are identified, ____ take priority in worldwide conservation efforts.
A. healthy ecosystems
B. riparian zones
C. hot spots
D. grasslands
E. forests
Answer: C
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Integumentary exchange of gases implies that the animal ____
a. has a shell b. has a tracheal system c. lives in a moist location d. has a siphon e. lives in an arid location
Most of the water moving through a plant is lost
through a. osmotic gradients in the soil. b. transpiration. c. pressure flow forces in the xylem. d. photolysis. e. photosynthesis.
Which of the following are NOT haploid?
A. Polar bodies and secondary spermatocytes B. Primary oocytes and spermatids C. Secondary spermatocytes and spermatogonia D. Primary oocytes and spermatogonia E. Secondary spermatocytes and spermatids
A cross was made between homozygous wild-type female Drosophila and yellow-bodied male Drosophila. All of the resulting offspring were phenotypically wild type
Offspring of the F2 generation had the following phenotypes: Sex Phenotype Number male wild 96 male yellow 99 female wild 197 Based on this information: (a) Is the mutant gene for yellow body behaving as a recessive or dominant gene? (b) Is the yellow locus on an autosome or on the X chromosome?