Biology, 01.10.2019 13:20 lizzie3545
Recent work in classification of life on earth has shown that what were once called prokaryotes are much more diverse than ever suspected. the prokaryotae are now divided into two domains, the eubacteria and the archaeabacteria, as different from each other as either is from the eukaryota. no one of these groups is ancestral to the others, and each shares certain features with the others as well as having its own unique characteristics. one group of prokaryotae, the blue-green algae, have left a fossil record that is dated to be nearly 3.5 billion years old, among the oldest fossils currently known. these blue-green algae had cell walls and were photosynthetic. considering this, where would you place the cyanobacteria in this cladogram?
a) archaebacteria
b) eubacteria
c) plantae
d) protista
Answers: 2
Biology, 22.06.2019 02:10
How does a gymnosperm prevent itself from pollinating the same tree
Answers: 1
Biology, 22.06.2019 06:30
Step 1 review the imaginary strand of dna below. note the complementary base pairs. a g c a a t c c g t c t t g g t c g t t a g g c a g a a c c step 2 to begin replicating this strand of dna, draw the two sides of the strand separating. step 3 now, draw the free-floating bases linking up with the separate sides. remember to follow the rules of complementary base pairing. step 4 draw the two resulting dna strands.
Answers: 1
Biology, 22.06.2019 07:00
The is an estimate of the fewest number of organisms a population needs to avoid extinction. this measurement will most if the number of offspring each female in the population produces increases. if the population's this measurement will most likely increase. 1 population density, minimum viable population, carrying capacity 2 decrease, be unaffected, increase 3 death rate increase, dead rate decrease
Answers: 2
Recent work in classification of life on earth has shown that what were once called prokaryotes are...
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