Natural selection is the process where organisms that are best suited to their environment survive and pass on their genetic traits in increasing number to successive generations. At the same time, organisms that are less adapted fail to survive or multiply at a lower rate, and tend to be eliminated from the ecosystem.
Initiation, Elongation, and Termination
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1. The Double Helix unzips (into two halves) and the enzymes break apart of the hydrogen bonds between the bases.
2. DNA polymerase moves along the strands and adds free floating nucleotides to the nitrogen bases accorinding to base pairing rules
3. Two new double helixes are formed
Answer:
the answer would be D
Explanation:
This is because Cool air goes into southern California, making the summers cooler.
<span>-A nucleus of an atom can be compared to the sun of a solar system because the nucleus, like the sun, is the largest part of an atom and its electrons orbit around it, much like planets in a solar system.<span> Atoms can also gain or lose electrons similarly to how stars can gain or lose planets.
</span></span><span>-How about a fence around a yard? It does the same thing as a plasma membrane, it keeps the things that are supposed to stay in the yard, in the yard. And, it keeps the things that are outside the yard from getting into the yard. Every once in a while it lets a few select things either go in or out.
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<span>-how about the jelly in a doughnut its the same idea it is the fluid in a cell that fills in everything its like blood in the human body.
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-<span>A analogy for ribosomes is a restaurant. It provides the citizens with protein just ribosomes which provide nutrients for the cell.
-</span><span>Rough E.R. is like a water slide because it gets you from the top down to the botom of the slide.
Sorry dude, thats all i have time to answer, hope someone else can help you!</span>
Answer:
The correct answer is spirochete and cyanobacteria
Explanation:
The endosymbiotic theory states that the eukaryotic cells are evolved from prokaryotic cells when a larger prokaryotic cell engulfed the smaller prokaryotic cell. The presence of chloroplast and mitochondria supports this theory.
After genetic analysis of chloroplast DNA, it was seen that it closely resembles the cyanobacterial DNA which shows that ancestor host cell gained photosynthetic ability from endosymbiosis with a cyanobacterial ancestor.
It was also seen that ancestral host cells engulfed spiral bacteria called spirochetes which helped them to produce cilia for example tail on sperms is the result of endosymbiosis of spirochete. So the right answer is spirochete and cyanobacteria.
