What would be the phenotypic and genotypic ratios of a cross between two individuals that are heterozygous for an incompletely dominant trait?
1.3:1 and 1:2:1
2.1:2:1 and 1:2:1
3.1:2:1 and 3:1
4.9:3:3:1 and 3:1
2
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There is a direct correlation between the cell cycle checkpoints and concentrations of which types of proteins?
a. kinases b. p53 c. cyclins d. retinoblastoma proteins (Rb)
Along coastlines, the area between high tide and low tide is the
A. hydrothermal vent. B. continental shelf. C. intertidal zone. D. estuary.
During which stage of eudicot development does the embryo continue to enlarge and elongate and the cotyledons become obvious?
A. torpedo stage B. zygote stage C. proembryo stage D. globular stage E. heart stage
Rhizobium bacteria live in root nodules and
A. fix carbon dioxide so that the carbon may be used to build glucose. B. increase the surface area, thereby increasing the water absorbing capacity of the plant's roots. C. fix atmospheric nitrogen to NH4+ to build organic compounds. D. All of the answer choices are correct.