In the late 1970s Woese argued that there are two fundamentally different groups of prokaryotes by demonstrating:a
different DNA sequences in prokaryotes.
b. some prokaryotes carry on photosynthesis.
c. the difference in the appearance of the nuclei.
d. gene codes of ribosomal RNA of different bacteria.
e. some prokaryotes produce methane while others do not.
d
You might also like to view...
Ancestry can be traced by maternal lineage using ____________________, and by paternal lineage using ____________________
Fill in the blank(s) with correct word
In transduction, bacterial cells ____
a. take up pieces of DNA that are released as other cells disintegrate b. receive DNA from an infecting phage c. replicate DNA molecules d. make replicate copies of one another e. generate their own DNA
In what sense is the genetic code nearly universal?
a. All organisms on Earth share in common approximately 85 percent of their DNA sequence. b. The genetic code has its origin in meteorites from distant regions of interstellar space. c. Nearly every possible combination of codons occurs in each organism’s chromosomes. d. Specific mRNA sequences generate the same proteins in nearly all known organisms.
A horseshoe crab uses its long extended spine
for what purpose?
a. defending its territory b. digging for clams c. fighting for mates d. protection from predators e. flipping itself right side up