Cladograms will group birds with reptiles because these groups share
A. many similar characteristics.
B. derived characteristics.
C. a common ancestor.
D. All of the options are correct.
Answer: D
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Plant hormones produce their effects by _____
I) altering the expression of genes II) modifying the permeability of the plasma membrane III) modifying the structure of the nuclear envelope membrane A) only I B) only II C) only III D) only I and II E) I, II, and III
Which of the following statements is true regarding genomic imprinting?
A) It explains cases in which the gender of the parent from whom an allele is inherited affects the expression of that allele. B) It is greatest in females because of the larger maternal contribution of cytoplasm. C) It may explain the transmission of Duchenne muscular dystrophy. D) It involves an irreversible alteration in the DNA sequence of imprinted genes. E) All of the above are correct.
In Morgan's experiments, the white eye allele in Drosophila was shown to be
A. located on the Y chromosome. B. located on an autosome. C. dominant. D. located on the X chromosome. E. codominant.
Angela would like to look at living algae from pond water. What type of equipment should she use?
A. her naked eye B. magnifying glass C. transmission electron microscope D. compound light microscope E. scanning electron microscope