Opposable thumbs were an adaptation of primates that enabled them to live in trees
____________________ Indicate whether the statement is true or false.
T
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Yolk, when unequally distributed in the egg cytoplasm, is most commonly concentrated in the ____ half of the egg
a. cleavage b. gastrulation c. animal d. vegetal e. embryonic
Assume that a cross is made between AaBb and aabb plants and that all the offspring are either AaBb or aabb. These results are consistent with ________
A) codominance B) complete linkage C) hemizygosity D) alternation of generations E) incomplete dominance
In modern terminology, diversity is understood to be a result of genetic variation. Sources of variation for evolution include all of the following except
A) mistakes in translation of structural genes. B) mistakes in DNA replication. C) translocations and mistakes in meiosis. D) recombination at fertilization. E) recombination by crossing over in meiosis.
How do cholinesterase inhibitors improve the learning and memory of people who are suffering from Alzheimer's Disease?
A. Cholinesterase inhibitors will decrease the levels of acetylcholine in the brain. This will increase the neural functioning in brain regions associated with learning and memory. B. Cholinesterase inhibitors will increase the levels of testosterone in the brain. This will increase the neural functioning in brain regions associated with learning and memory. C. Cholinesterase inhibitors will decrease the levels of cerebral spinal fluid in the brain. This will decrease neural pressure associated with the brain regions associated with learning and memory. D. Cholinesterase inhibitors will increase the levels of acetylcholine in the brain. This will increase the neural functioning in brain regions associated with learning and memory.