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adell [148]
3 years ago
6

3. Which of the following situations is least likely to lead to geographic isolation and allopatric speciation?

Biology
1 answer:
oksian1 [2.3K]3 years ago
7 0

Answer:

b. A deep, narrow river divides a population of hummingbirds.

Explanation:

Hummingbirds can fly across the river. The deep and narrow river can not separate a population of hummingbirds into two patches since hummingbirds from one side of the river can fly and reach to the other side of the river.  

Without any geographical isolation, hummingbirds can continue to interbreed among themselves. The continued interbreeding would not allow their reproductive isolation and thereby would prevent the allopatric speciation.  

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Consider organisms that are eukaryotic, are found in both unicellular and multicellular forms, may resemble plants but are not p
e-lub [12.9K]

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The correct answer is fungi.

Explanation:

Fungi are the eukaryotic organism but they can be present in unicellular and multicellular form. They are different from plant, animals, and bacteria. They are heterotrophic organisms and do not conduct photosynthesis. Their cell wall is made up of chitin.  

Most of the fungi are saprophytes which means they take their nutrition from the dead and decaying organism. So fungi play an important role in clearing the waste organic material from the environment so they help in bioremediation. All members of fungi comes under a separate kingdom fungi.

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the size difference between most multicellular hosts and their pathogens results in which of the following evolutionary advantag
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Pathogens, of course, have the advantage in this evolutionary game because they can change far more quickly than the hosts—especially in long-lived animals like humans—due to their high population numbers and rapid generation rates. The relationship between surface area and complement activation shows how bacterial pathogenicity may be influenced by tiny size. The region of the microbial surface may also have a role in their action since other antimicrobial agents are focused there. A pathogen reacts with the host and creates infection, which results in the host being ill. Any dangerous microbial agent, including bacteria, viruses, protozoa, fungi, and helminths, might be considered a pathogen.

Learn more about pathogen

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