When homologous chromosomes are aligned with each other and arranged as pairs in order of decreasing size, the resulting portrait is referred to as a(n) ____
Fill in the blank with the appropriate word.
karyotype
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The worldwide variety of organisms and ecosystems is termed:a
biodiversity. b. biomixtures. c. ecodiversity. d. biological multiplicity. e. organismal diversity.
If one particular gene has a dramatically different ________ from others within an organism's genome, it is likely that the gene was acquired via horizontal gene transfer
a. AT content b. GC content c. codon bias d. All of the above are correct.
In the rumen, food is quickly attacked by cellulase
A. enzymes produced by microbes. B. archeons. C. enzymes produced by both the ruminant and the microbe. D. enzymes produced by the ruminant.
Lancelets are primarily non-motile, and feed by filtering food out of the water in which they live, using a combination of cilia and oral tentacles. During this process, the lancelet collects filtered water, which must be expelled from its body. Where does filtered water exit the lancelet?
a. pharyngeal slits b. anus c. atriopore d. mouth