The centrosome:
A. is a region of the chromosome where
sister chromatids remain attached.
B. is a region of the chromosome where
kinetochores attach.
C. is a region of the chromosome where
microtubules attach to chromosomes during
mitosis.
D. is the microtubule organizing center for the
mitotic spindle.
E. All of these choices are correct.
D
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A researcher isolates a species of fungus that only reproduces sexually. He introduces individual fungi—all of the same mating type (e.g., with the same mating type alleles)—into a petri dish. What do you expect will happen with the fungi in this dish?
A. Fungi in the dish will mate, forming spores via sexual reproduction. B. Fungi in the dish will not mate, but will from spores via asexual reproduction. C. No spores will be formed by fungi in the petri dish.
Homeostasis is the balancing of internal factors as changes in the external environment occur
Indicate whether the statement is true or false
Huntington's Disease is inherited as an
a. autosomal recessive. b. autosomal dominant. c. X-linked recessive.
A molecule whose concentration determines the developmental fate of a cell is called
A) monomorphic. B) a maternal effect gene. C) a signaling molecule. D) a morphogen.