What is an example of natural selection in bacteria?
Over time, bacteria can become resistant to certain antibiotics (such as penicillin). This is an example of natural selection. In a large population of bacteria, there may be some that are not affected by an antibiotic. These survive and reproduce – producing more bacteria that are not affected by the antibiotic.
How does bacteria represent natural selection?
Antibiotic resistance evolves naturally via natural selection through random mutation, but it could also be engineered by applying an evolutionary stress on a population. Once such a gene is generated, bacteria can then transfer the genetic information in a horizontal fashion (between individuals) by plasmid exchange.
What are some examples of natural selection?
Deer Mouse.
How has MRSA evolved through natural selection?
In fact, biologists have observed the MRSA strain infecting a single patient evolving through random mutation and selection. The patient was being treated with vancomycin, and slowly, over the course of a few months and 35 separate mutations, the bacteria evolved into a vancomycin-resistant MRSA strain.
What is the best example of natural selection?
Tree frogs are the best examples of natural selection.
- Natural selection is a natural process in which organisms that are more adapted to their environment successfully reproduce more than those that are not.
- Snakes and birds, for example, have been known to devour tree frogs.
What are three different examples of how natural selection can occur in a species?
Regardless of the trait, natural selection tends to do one of three things to a population. It can keep the trait the same, stabilizing selection, move the trait in one direction, directional selection, or select for the extreme values of the trait, diversifying selection.
Which of the following is the most recent example of evolution and natural selection?
Which of the following is the most recent example of evolution and natural selection? The development of pesticide-resistant insects.
What are some examples of environmental changes that could create selection pressures for a species?
Predation, competition and disease are examples of selection pressures.
Is a giraffe an example of natural selection?
A classic example of natural selection at work is the origin of giraffes’ long necks. Over many generations this process produced giraffes as they are today. This process of natural selection was first described by Charles Darwin in 1859 in On the Origin of Species.
Which is the best example of natural selection?
What type of drug is atazanavir GCSE?
Atazanavir (formerly known as BMS-232632) is an antiretroviral drug of the protease inhibitor (PI) class. Like other antiretrovirals, it is used to treat infection of human immunodeficiency virus (HIV).
What are examples of superbugs?
Superbugs are strains of bacteria, viruses, parasites and fungi that are resistant to most of the antibiotics and other medications commonly used to treat the infections they cause. A few examples of superbugs include resistant bacteria that can cause pneumonia, urinary tract infections and skin infections.
Which is an example of natural selection in bacteria?
Natural selection processes in disease-causing bacteria are widely documented. For example, a person who is ill because of disease-causing bacteria can become well when given antibiotic drugs, which destroy the bacteria in the person’s body.
Which is an example of an eubacteria organism?
Some examples of eubacteria include Streptococcus pneumoniae, the bacteria responsible for strep throat; Yersinia pestis, thought to be the cause of the black death; E. coli, found in the intestines of every mammal; and Lactobaccilus, a genus of bacteria used to make cheeses and yogurt.
How are rats an example of natural selection?
If a hypothetical species of rats live in a certain type of tree with the branches evenly spaced, natural selection would lead the rats to be right-sized for that type of tree. Smaller rats could not reach from branch to branch and larger rats would break the branches and fall.
How did Darwin explain the process of natural selection?
The process of natural selection refers to one of the mechanisms of evolution of the species of living beings, proposed by Charles Darwin and Alfred Russel Wallace, from which they explained the design of nature. Natural selection occurs thanks to the progressive adaptation of the species to its environment .
https://www.youtube.com/watch?v=FzLJWNhy7x4