Evolution Questions?

Question

1. How does bacterial resistance to antibiotics support for Darwin’s theory of evolution

2. There is a theory that Native Americans are the descendants of people who migrated to North America across the Bering Straight from Siberia (Russia). Considering the fact that the Bering Straight is now covered by water, (think geographic isolation) explain how the existence of Native Americans supports Darwin’s theory of Evolution.

Answer 1

Well, everyone gave you your answers already...good luck.

Answer 2

In any colony of bacteria, say during a throat infection, there is variation between individuals, just like there are between people. If I take an antibiotic to, not all the bacteria will be killed, a few will survive, either because they were not exposed to the antibiotic, or because they were resistant to it, this resistance is genetically determined, that is, there are sections of the bacterial DNA which produce proteins that neutralise the antibiotic. Those that survive will reproduce, their offspring will have a high percentage of individuals who carry the resistance genes. The next time there is exposure to the same antibiotic, there will be a higher percentage of resistant bacteria, and the antibiotic will not be as effective, so the dose will need to be increased, or a different antibiotic will need to be used.

2. Native Americans migrated down from the Bering Straits between 12000 and 15000 years ago, although some scientists suggest 20000 years, if you examine the physical characteristics of the different tribes at different latitudes, you will see similar selective changes have occurred. At the equator they have darker skin than at cooler climates, reflecting the need to protect the skin from sun damage. This is an example of convergent evolution, where similar selective pressures (eg sun radiation) give rise to similar phenotypes (eg dark skin) in geographically separated groups of the same species.

Answer 3

Native americans, by themselves, isn't. They're the same stage of evolution that the rest of the world was in.

Bacteria pass on resistances. Those that survive an antibiotic multiply. From that strain, those that survive the next type of antibiotic continue to pass on. Now, from a strain of bacteria that didn't have any immunity, you have a strain that has adapted through natural selection (random changes in the bacteria allow it to survive) has been able to fight off multiple forms of antibiotic.

Do this enough, and as long as some bacterium have been able to survive, you will eventually have a new bacteria that does not resemble the original bacteria. A new strain and species of bacteria has now been created. It may still do the same thing, (Make your nose hairs disintegrate or something) but it is a different bacteria.

Answer 4

Same as why we have the Platypus,the Sea Cow or Manatee,the Alligator and the Armadillo, the Wart Hog, the Rhinoceros, these would all be creatures we do not recognize by now if they "evolved" We are in the same time yet we humans are here with the animals listed above, we have not morphed into anything else but our same human form and they have not changed either, some creatures have died out, but prehistoric and modern day do not exist together we would all morph together. Creatures are made, created "each after their own kind" They do not evolve they adapt. God is truth, and the more science discovers the more it proves the truths given us in the Bible, read "Job" in the Bible, God tells of the dinosaurs, the condensation of the rain, the making of dew, the fact that the world was a "sphere" who's boundaries could not be moved,God stated this 3thousand years before Columbus sailed the seas and the scientists of that day thought the world "flat" they should have read "Job". God stated that there were "oceans" under the earth--(It's in Job as well)they just discovered an underground ocean the size of Antarctica! Under Beijing China,that being the cause of many quakes, when the plates shift under this sea and waves are created under the earthen plates.Check it out. The more they mock God, the more truths are discovered and the more mud is on the evolutionists faces.

Answer 5

1. The bacteria at first its gonna start getting destroyed by the antibiotics but then there are those in the part of the bacteria that start to absorb the blows that the antibiotic its throwing at it and starts reproducing itself making more of the ones that the antibiotic has no effects on.

2. Because the people that came from Siberia were used to a cold and harsh environment they had to adapt to the new world and search for other methods to get their food. They also had to adapt to the warmer whether meaning that their skin color had to change in other to have a natural sun blocker.

Answer 6

1. Bacteria that were susceptible to the antibiotics were killed off. Bacteria that could withstand exposure to the antibiotics survived and reproduced other bacteria that could also withstand exposure to the antibiotics. Over time, the whole population would be able to tolerate the antibiotics. This is the idea of natural selection.

2. Native Americans became more different from the Siberian population the longer they were separated. Traits that helped them survive became common in the population. This shows change in a population over time. There wasn't enough change to cause speciation, but there were changes.

Answer 7

1. Darwin's theory of evolution is based on survival of the fittest. In other words, organisms and animals adapt to survive in their surroundings. Bacterial resistance to antibiotics is one example of these kinds of adaptations. Bacteria have grown accustomed to the types of antibiotics available, and as a result, have evolved so that they are no longer susceptible to the antibiotics.

2. The ancestors of the Native Americans evolved and adapted to their new surroundings. Even though they originally came from elsewhere, they adapted to the North American climate.