What is the main functional difference between kinetochore microtubules and nonkinetochore
microtubules?
What will be an ideal response?
Kinetochore microtubules connect spindle poles to the kinetochores of chromosomes whereas
nonkinetochores originate from the spindle poles but overlap with in the center of the spindle without
connecting to the kinetochores of chromosomes.
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What is the most common cause of anorexia-related death?
a. cancer c. pneumonia b. cardiac arrest d. stroke
Two species of Gelsemium spp., a flowering vine plant, share the same habitat and have similar insect pollinators. However, pollination occurs for Gelsemium semperviren from mid-January to late March, and for Gelsemium rankinii from late March to mid-April. This represents
A. gametic isolation. B. a process analogous to behavioral isolation in animals. C. temporal isolation. D. ecological isolation. E. mechanical isolation.
In most animals, fertilization concludes with
a. the fusion of egg and sperm nuclei. b. meiosis II of the first polar body. c. meiosis II of the oocyte. d. sperm penetration of the oocyte. e. release of digestive enzymes by the sperm acrosome.
The capacity for some tRNAs to recognize more than one codon in mRNA is explained by a phenomenon called
a. redundancy. b. wobble. c. a reading frameshift. d. degeneracy.