True-breeding tall snapdragons with red flowers were crossed with short snapdragons with white flowers. The resulting F1 progeny were all of medium height and had pink flowers
When the F1 progeny are crossed with each other, what proportion of the F2 progeny would be of medium height and have pink flowers?
A. 1/4
B. 1/2
C. 1/8
D. 1/16
E. 3/4
A
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If the results of a chi-square test of a given set of data show a P value greater than 0.05, then the null hypothesis
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The heart of amphibians has ____ chambers. The hearts of birds and mammals have ____ chambers
a. two; three b. three; four c. two; four d. three; five e. three; two
In what way are eyes and eyespots similar to each other?
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A seed contains an embryo mutant for gibberellic acid (GA) receptors. What phenotype would you expect to result in the seedling?
A. No mutant phenotype until the plant is older. B. Malformed cotyledons due to defects in development. C. Yellow instead of green due to chloroplast failure. D. Poor growth due to unusable nutrient reserves.