The lack of corals near the mouths of the Orinoco and Amazon rivers is primarily due to:
a. cool northern flowing currents.
b. cool upwelling water.
c. massive fresh water out-flow.
d. clear water.
e. both a and b
C
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Synthesis of a protein destined to function in the nucleus occurs:
A. in the cytosol. B. on the rough endoplasmic reticulum. C. on the outer leaf of the nuclear envelope. D. in the Golgi apparatus.
In a certain breed of chicken, an incompletely dominant gene controls color. The homozygous black,
when crossed with the homozygous splashed-white, produces an intermediate gray color pattern called blue. A second gene controls the shape of the comb. The dominant allele (R) produces rose, while the recessive allele (r) produces single. Give the F1 and F2 genotypic and phenotypic ratios of a cross between a pure-breeding, black single and a pure-breeding, splashed-white rose. What will be an ideal response?
Darwin's theory of evolution is supported by many modern pieces of evidence. Check all that apply.A) new measurements of the age of the earthB) an understanding of the mechanism of heredityC) human population growthD) comparative studies of animal structuresE) similarities in DNA of related species
What will be an ideal response?
Nociceptors are a type of chemoreceptor.
Answer the following statement true (T) or false (F)