What holds together the chromatid from one homologous chromosome to a non-sister chromatid of the other homologue at the site of a chiasma?
a) covalent bonds
b) ionic bonds
c) H bonds
d) van der Waals forces
e) disulfide linkages
Ans: a) covalent bonds
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It would be necessary to use a tuberculocidal agent to kill a particular species of:
A) Clostridium. B) Mycobacterium. C) Staphylococcus. D) Streptococcus.
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A) water molecules B) helper proteins C) molecular chaperones D) tobacco mosaic viruses E) none of the above
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a. may be triggered by stress. b. may be triggered by changes in air temperature. c. may be due to genetic predisposition. d. may be triggered by a and b only. e. may be due to genetic predisposition, and may be triggered by stress and by changes in air temperature.