What does a half-shaded circle represent on a pedigree chart?
A) a female carrier
B) a female who does not have an allele for the genetic disorder represented
C) a male who is affected by the genetic disorder represented
D) a male carrier
A
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A chromosome with the centromere located two-thirds of the distance from its end could be classified as
A. metacentric. B. submetacentric. C. acrocentric. D. telocentric. E. either submetacentric or acrocentric.
In his experiments, Anfinsen treated a protein with a chemical that broke disulfide bonds and then removed the
chemical to see how this would affect the function of the molecule. What did he conclude from these experiments?
a. The information for determining the three-dimensional shape of ribonuclease lies in its amino acid sequence. b. The disulfide bonds are essential for quaternary, but not tertiary, protein structure. c. Protein conformation is maintained when disulfide bonds are disrupted. d. Altering the three-dimensional shape of the protein is irreversible. e. Disulfide bonds are unnecessary for proper protein function.
The two main stages of the cell cycle are called
A) telophase and cytokinesis. B) cytokinesis and mitosis. C) mitosis and interphase. D) interphase and anaphase.
While methane is produced abiotically in certain geochemically active areas, these sites are also hotspots for aerobic methane oxidation because they are rich in H2S, which microbes convert to sulfuric acid.
Answer the following statement true (T) or false (F)