The chromatids detach from one another and become visibly separate chromosomes during
A) anaphase. B) metaphase. C) prophase. D) interphase. E) telophase.
A
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________ are genetically engineered proteins that allow cytosolic calcium fluxes to be observed by an increase in fluorescence.
Fill in the blank(s) with the appropriate word(s).
Freezing oocytes has not been as successful as freezing sperm because
A) they undergo an extra meiosis. B) the woman can become dangerously cold. C) ice crystals can form in the abundant, watery cytoplasm. D) the nuclei shatter.
In muscle tissue, if there is not enough oxygen for aerobic respiration to occur, the muscle cell
A. can produce ATP by fermentation. B. cannot make ATP. C. uses creatine phosphate instead of ATP for energy. D. can produce ATP from fats. E. depletes its reserves of lactic acid.
The basis of heredity was the direct result of critical and logical thinking. After considering alternative scientific explanations to explain the data he obtained, Gregor Mendel laid the foundation for genetics. His conclusions were based on carefully planned investigations. What organism did Mendel select to carry out his investigations?
A) snapdragon plants B) fruit flies C) mice D) pea plants