Which of the following statements best explains the data?
(A) The appearance of blue in the F1 generation of the pink and white cross demonstrates that flower color is not an inherited trait but is determined by the environment.
(B) Flower color depends on stages of flower development, and young flowers are white, advancing to pink and then blue.
(C) Since the F1 and F2 phenotypes of the pink and white cross do not fit the expected genotypic and phenotypic ratios, blue-eyed Mary must reproduce by vegetative propagation.
(D) Flower color is an inherited trait, and the F1 and F2 phenotypes of the flowers arising from the pink and white cross can best be explained by another gene product that influences the phenotypic expression
Ans: (D) Flower color is an inherited trait, and the F1 and F2 phenotypes of the flowers arising from the pink and white cross can best be explained by another gene product that influences the phenotypic expression
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Glycoproteins in the plasma membrane that identify self and help the body defend itself against pathogens.
What will be an ideal response?
The metabolic processes called fermentation
A) produce substrates for the Krebs cycle. B) are alternatives for the pentose phosphate pathway. C) use an organic molecule as a final electron acceptor. D) occur only when oxygen is readily available. E) produce substrates for glycolysis.
In the photograph of the zygote fungus Pilobolus, what are the dark "hats" atop of the structures?
a. hypha b. gametangium c. zygote d. sporangium e. nucleus
Consider the following food chain: hawk - rabbit - clover. Each species will contain a different amount of calories in its body (clover: 10 calories, rabbit: 500, and hawk: 1200). Each species has a different daily caloric requirement (clover: sunlight, rabbit: 100 calories, hawk: 300). How many clover plants, per day, does it take to support one hawk?
A. approximately 30 clover plants B. approximately 600 clover plants C. approximately 60 clover plants D. approximately 3 clover plants E. None, clover plants do not support hawks.