If you tracked an individual X chromosome from a male to his first generation offspring, then to his second generation offspring, what pattern would you see?
A. His X chromosome would be found only in
his daughters and granddaughters.
B. His X chromosome would be found only in
his sons and grandsons.
C. His X chromosome would be found only in
his daughters and grandsons.
D. His X chromosome would be found only in
his daughters, then in both his
granddaughters and grandsons.
E. His X chromosome would be found only in
his sons, then in both his granddaughters and
grandsons.
D
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If a mutation occurred in a flatworm such that the flame cells no longer functioned, what do you predict would be the consequence?
A. The parasitic forms could no longer hold onto their host. B. Excretory function would be impaired. C. Digestive function would be impaired. D. Nerve function would be impaired. E. Reproductive function would be impaired.
Primary active transport results in which of the following?
a. A charge difference across a membrane b. A pocket forming around target particles c. The formation of additional ATP d. The reduction in extracellular fluid
What conclusion was based on experiments with "maze-bright" and "maze-dull" rats?
A) An enriched environment increases maze-running ability only in dull rats. B) A poor environment adversely affects maze-running ability in both bright and dull rats. C) Maze-running ability is highly heritable and unaffected by environment. D) Maze-running ability is based entirely on environment and unaffected by genes.
Each of the following is true about anaphase except
A) anaphase is the shortest stage of the mitosis. B) during anaphase A, each chromosome is pulled to its respective pole as its kinetochore microtubules shorten. C) during anaphase B, the spindle poles are pushed further apart as interpolar microtubules lengthen. D) anaphase B may be coincident with or follow anaphase A, depending on the cell type. E) All of the above are true.