Methods for determining the linkage group and genetic map in humans involve which of the following?
A) chiasma-type and classical analyses
B) DNA markers
C) twin spots and tetrad analysis
D) zygotene and pachytene DNA syntheses
E) tetrad analysis and bromodeoxyuridine
Answer: B
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The disinfectant screening method that is known as the ________ test, which is used to measure the potency of a disinfectant.
Fill in the blank(s) with the appropriate word(s).
Ecosystem ecology is primarily concerned with
A. ecosystem stability. B. species interactions in various types of ecosystems. C. the synthesis of nutrients. D. patterns of species diversity within ecosystems. E. movement of energy and materials through organisms and their communities.
You modify the gene for an integral membrane protein so that the cytoplasmic portions of the protein are deleted. When the gene is inserted in cells, what happens to the mobility of this protein in the membrane?
a) they often do not move at all b) they often move much greater distances than the intact protein c) they often move much smaller distances than the intact protein d) they often flip to the opposite leaflet
Diglycerol tetraether lipids ________.
A. form typical bilayer membranes in thermophilic Archaea of the genus Thermoplasma B. are a characteristic feature of thermophilic Archaea C. are found in some bacteria and some Archaea D. tend to make the membrane less rigid