The water from rivers eventually flows into
a. aquifers.
b. groundwater.
c. oceans.
d. surface water runoff.
C
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Which are short, hair-like structures that project from the surface of the cells?
a. Flagella b. Intermediate filaments c. Microtubules d. Centriole e. Cilia
In an example of embryonic induction, signals from cells in the ________ cause gastrulation
a. dorsal lip b. ectoderm c. gray crescent d. endoderm
In gene therapy, what is transferred into an
individual’s body cells?
a. new genomes b. recombinant DNA c. GMOs d. bacterial plasmids e. DNA libraries
In attempting to construct a universal phylogeny, researchers analyzed several different gene sets. The results of this analysis are not congruent (see accompanying figure)
The most likely explanation for this, as proposed by Carl Woese and others, is ________ [three words] in early populations, which would account for these discrepancies. Fill in the blank(s) with correct word