Nondisjunction is the failure of sex chromosomes to separate during gamete formation
Indicate whether the statement is true or false
FALSE
Explanation: Nondisjunction is the failure of chromosomes to separate. This can involve either autosomes or sex chromosomes, and may occur either during mitosis or meiosis.
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Studies of a soybean plant (Glycine max) and the bacterium Bradyrhizobium japonicum have shown that the tip of a
root hair curls toward the bacterium in response to ____.
a. a flavonoid released by soybean roots b. nod gene products produced by soybean roots c. nod gene products produced by the bacterium d. nitrogen fixation by the bacterium e. a flavonoid produced by the bacterium
Accessory pigments include molecules that reflect reds, oranges, and yellows. Leaves of many plants show these colors in the fall because
A. the cooler weather causes the plant to produce more of the accessory photosynthetic pigments. B. the chlorophyll in the leaves degrades as the plants shed leaves. C. the lessening of daylight as winter approaches causes the plant to produce more of the accessory photosynthetic pigments. D. plants produce more chlorophyll. E. All of the answer choices are correct.
Short nucleic acid molecules used to locate complementary sequences in a larger population of molecules are called (probes/primers/vectors)
What will be an ideal response?
Respiratory neurons from the dissected brainstem of a neonatal rodent can maintain rhythmic firing for
how many hours?
a. 0 b. 1 c. 4 d. 6 e. 8