True-breeding pea plants with inflated, yellow pods were crossed with true-breeding plants with constricted, green pods. The F1 progeny all had inflated, green pods
When the F1 is allowed to self-fertilize, what fraction of the F2 progeny will have constricted, yellow pods?
A. 1/4
B. 3/4
C. 1/16
D. 3/16
E. 9/16
C
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Which of the following statements about malaria is false?
A. Fertilization occurs within a mosquito. B. Merozoites are found inside red blood cells. C. Gametocytes develop from merozoites. D. Sporozoites are only found within a mosquito. E. Gametocytes are passed to a feeding mosquito.
Osmolarity is the ____
a. total solute plus solvent concentration in a solution b. total solvent concentration in a solution c. ratio of solvent to solute in a solution d. total solute concentration in a solution e. ratio of solute to solvent in a solution
A dividing cell lacks a nuclear membrane, contains chromosomes consisting of two chromatids, and has clearly visible chromosomes. It is in which one of the following stages?
A. metaphase B. anaphase C. interphase D. telophase
When the energy flow through an ecosystem is measured at each trophic level, ________ of the available energy passes from one level to the next.
A. 1% to 2% B. 5% to 20% C. 25% to 35% D. 36% to 45% E. 46% to 55%