In lakes, rooted plants may grow in the ________ zone but no photosynthesizing life is found in the ________ zone
A) littoral; profundal
B) profundal; pelagic
C) littoral; benthic
D) benthic; profundal
E) littoral; pelagic
Answer: A
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How can you determine the genotype of a plant showing the dominant phenotype of red color?
A. The phenotype reflects the genotype, so the plant must be homozygous for the trait. B. Cross the red plant with a white plant to see if any white plants appear. C. Cross the red plant with other red plants to see if any white plants appear. D. Cross the red plant with a white plant to see how many red plants appear. E. Cross the red plant with another red plant, and then cross the F1 population with each other to see if any white plants appear.
Chromosomal aberrations can be produced by
exposure to a. viruses. b. radiation. c. various chemicals. d. viruses and radiation only. e. viruses, radiation, and various chemicals.
Proteins are made up of many
A. amino acids. B. RNA molecules only. C. DNA molecules only. D. RNA and DNA molecules. E. nucleotides.
Color blindness is an X-linked recessive trait. Two normal-vision parents produce a color-blind child. The child's sex is _____________.
Fill in the blank(s) with the appropriate word(s).