Which proteins would you target if you wanted to disrupt the chromosome superstructure for chromatin condensation that ultimately produces the characteristic shape of the metaphase chromosome?
What will be an ideal response?
scaffold proteins
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Use the principle of parsimony and molecular genetic data to choose a phylogenetic tree for your hypothesis of how the extant species were derived from the ancestor.
A. Tree 1 requires the most mutations, making it the best choice.
B. Tree 1 requires the fewest mutations, making it the best choice.
C. Tree 2 requires the most mutations, making it the best choice.
D. Tree 2 requires the fewest mutations, making it the best choice.
E. Both trees are equally good because sequences A, B, C, and D are the same in both.
Keystone species involve _______.
a) species that have disproportionately large effects relative to their abundance b) certain small areas that hold unusually large number of species c) two species which cannot occupy the same niche in a habitat d) nonnative species introduced into a new ecosystem that cause native species to go extinct
Which of the following biologic agents is highly transmittable from person to person?
A) Smallpox B) Botulinum C) Bubonic plague D) Yellow fever virus
The DNA found in most bacterial cells
A) is surrounded by a nuclear membrane. B) utilizes histones for chromosomal packaging. C) is circular in structure. D) is linear in structure. E) is found in multiple copies.