Groups of genes that are evolutionarily related are called _____
A) gene families
B) gene duplications
C) SNPs
D) gene domains
E) metagenomes
A
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A dye often used for its ease and sensitivity to visualize nucleic acid after agarose gel electrophoresis is
A. nigrosin. B. malachite green. C. gold oxide. D. ethidium bromide.
The organisms responsible for the majority of primary production in marine environments are the copepods
Indicate whether the statement is true or false
Segmentation in arthropods differs from that of annelids because arthropod segments are:A
smaller. B. less specialized. C. only present in adults. D. more specialized. E. only present in larvae.
Why do sugars tend to be highly water soluble?
A) because of their large numbers of hydroxyl groups B) because of their large numbers of methyl groups C) because of their small molecular weights D) because of their large numbers of sulfhydryl groups E) because they have only a few hydroxyl groups