The largest fraction of saltwater is that which is frozen at the Earth's polar regions.
Answer the following statement true (T) or false (F)
False
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Evaluate this statement: crossing over is the only mechanism that creates genetic variation by creating hybrid chromosomes with new combinations of alleles.
A. False, random fertilization also creates genetic variation by creating hybrid chromosomes B. True, independent assortment and random fertilization create genetic variation by shuffling chromosomes instead C. False, independent assortment and random fertilization also create genetic variation by creating hybrid chromosomes D. False, independent assortment also creates genetic variation by creating hybrid chromosomes
Cognitive learning includes
A. perception. B. analysis. C. judgment. D. recollection. E. All of these choices are correct.
Which of the following organisms utilizes polycistronic mRNAs?
A) E. coli B) C. elegans C) mammals D) choices A and B only E) all of the above
Cellular membranes are
A. fluid. B. solely composed of lipids. C. composed of a single layer of amphipathic molecules. D. selective to the transport of gases and small molecules only. E. found in eukaryotes, but not prokaryotes.