The technique called fluorescence in situ hybridization (FISH) uses
A) stains to sort chromosomes into general size classes, designated A through G.
B) DNA probes with attached fluorescent molecules that indicate specific DNA sequences.
C) lures to pull out specific sequences from their chromosomes.
D) stains that distinguish AT-rich from GC-rich sequences.
B) DNA probes with attached fluorescent molecules that indicate specific DNA sequences.
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A large regional community is
A. a biome. B. the biosphere. C. an ecosystem. D. a trophic level.
Vertical evolution, whereby living organisms evolve from a common ancestor ("tree of life"), is the only mechanism of evolution on Earth.
Answer the following statement true (T) or false (F)
The Scaphopoda
a. Lack a shell b. Lack a mantle c. Live in fresh water d. Pursue prey in a manner similar to squid e. Lack gills
The following affect membrane fluidity EXCEPT
A. glycoprotein composition. B. cholesterol. C. phospholipid composition. D. the length of the phospholipid fatty acyl tail. E. the relative amounts of phospholipids containing saturated or unsaturated fatty acyl tails.