How does the growth of antibiotic resistance in bacteria support the theory of evolution by natural selection?

1 answer:

4 0

Wow that's a good one :). Think about it like this. When you put antibiotics in place where bacterias live, probably most of them will die, however there might be "some" who are resistent to the antibiotic by their nature, (mutations etc.) so among the bacterias which were exposed the antibiotics those resistent ones will survive. And bacterias have a system for exchanging DNA to make each other more resistant, its called "conjugation" look it up. By conjugation they give each other genes which will help them survive. So if we summarize, those who are already resistant survive (which is a cause of natural selection in an environment of antibiotics) and help others resistant too.

You might be interested in

BIOLOGY question, pls i need assistance.

Viktor [21]

It’s A because the dominant cantaba the overall experience

4 0

3 years ago

Read 2 more answers

Which of the following statements about viruses is FALSE? Which of the following statements about viruses is FALSE? Viruses cont

adoni [48]

Answer:

Viruses use their own catabolic enzymes.

Explanation:

Viruses are the infective particles present in the environment which encloses their genetic material which could be wither RNA or DNA enclosed in the protein coat.

The protein coat is made of the capsomers which are arranged in the tubular structure forming capsid. The viruses do not contain the metabolic machinery of their own that is the reason that they do not have replication or transcription or translation machinery. For this they are dependent on the host organisms as they use their machinery.

Thus, the selected option is correct.

6 0

3 years ago

When a specialized function of the cerebral cortex occurs on either the right or the left hemisphere, this is referred to as ___

forsale [732]

The answer is lateralization of brain function. This is the predisposition for some neural functions or cognitive processes to be more prevailing in one hemisphere than the other. The medial longitudinal fissure divides the human brain into two separate cerebral hemispheres, connected by the corpus callosum.

7 0

3 years ago

Frederic Griffith discovered transformation in his experiments on mice and Pneumococcus bacteria. He injected the mice with comb

qaws [65]

Answer: B. Rough strained and heat killed smooth strain kills mouse

Explanation:

6 0

3 years ago

What is the principal component of the thickest layer of the skin?

jek_recluse [69]

1. The correct answer is option A

The thickest layer is Dermis which is made up of two layers papillary and reticular. The reticular dermis is the lower layer of the dermis and is made up of dense irregular connective tissue featuring collagen fibers.

2. The correct answer is option E

Bone is composed of fibrous and mineralized connective tissues which is enriched in collagen and calcium phosphate.

3. The correct answer is option C

Muscles are composed of two major protein filaments: a thick filament composed of the protein myosin and a thin filament composed of the protein actin. These two filaments slide over each other to repetitively contract the muscles.

5 0

3 years ago