Which of these organisms is semalparous?
A. humans
B. oak trees
C. bears
D. dogs
E. agave plants
E. agave plants
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F- strains of Escherichia coli
A) do not have an F factor. B) have the F factor as a plasmid. C) have an integrated F factor. D) transfer the F factor to other strains at a high frequency.
Oxygen diffuses equally well through waterlogged soil and dry soil.
Answer the following statement true (T) or false (F)
Bacterial genes can be transferred from one bacterium to another by different mechanisms. The newly
introduced DNA can:
a. recombine with DNA already present. b. generate genetic variability. c. exchange alleles between homologous regions from two different individuals. d. allow growth on minimal media e. all of these
Scientists began to question the perfection of
the Chain of Being because of a. the discovery of new organisms in new parts of the world. b. the presence of body parts with no apparent function in some organisms. c. the existence of fossil forms. d. similarities in the structures found in different forms of life. e. all of these.