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notsponge [240]
3 years ago
10

Blue, brown, and green beetles from a forest migrated to a rocky mountain after a natural disaster. In the new environment, brow

n beetles can camouflage themselves from predators better than the green beetles and blue beetles can. Which outcome is most likely for the future population of beetles?
Most beetles will be blue and green because predators rely on them for food.



Most of the beetles will be brown because they have a higher likelihood of reaching reproductive age.



The distribution of the three colors will be equal to preserve genetic variance in the population.



The bodies of the offspring will have all three colors because body color is an incomplete dominance inheritance pattern.
Biology
2 answers:
Natasha2012 [34]3 years ago
4 0

Answer: Most of the beetles will be brown because they have a higher likelihood of reaching reproductive age.

Natural selection is the process of selection by nature in which an individual organism exhibiting more favorable phenotypic characteristics has more chances of survival and reproduction in it's corresponding environment.

In the new environment, brown beetles can camouflage themselves from predators better than the green beetles and blue beetles can. This is because of the fact that brown color of beetle is a better phenotypic trait which favors the survival of brown beetles over green and blue color. Therefore, the survived brown beetles will reproduce and grow in number.    

Aliun [14]3 years ago
3 0
The second one I guess,because if only the brown beetles can protect themselves from predators than later on the blue and green beetles might go extinct and only the brown ones will survive.........I think so..
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You are studying a biochemical pathway in the mold Neurospora where enzyme 1 converts the initial substrate into intermediate su
solmaris [256]

Complete question:

You are studying a biochemical pathway in the mold Neurospora where enzyme 1 converts the initial substrate into intermediate substrate A; enzyme 2 converts intermediate substrate A into intermediate substrate B; enzyme 3 converts intermediate substrate B into intermediate substrate C; and enzyme 4 converts intermediate substrate C into the end product, an amino acid that is essential for growth. You isolate a mutant that is unable to grow on minimal media. Which data would provide the strongest support for the hypothesis that this mutation occurred in the gene that codes for enzyme 2?

a. The mold can grow on rich medium plus intermediate substrate C, but not on rich medium plus intermediate substrate B.

b. The mold can grow on minimal medium plus intermediate substrate B, but not on minimal medium plus the initial substrate.

c. The mold can grow on minimal medium plus intermediate substrate B, but not on minimal medium plus intermediate substrate A.

d. The mold can grow on rich medium plus intermediate substrate D, but not on rich medium plus intermediate substrate C.

e. The mold can grow on minimal medium plus intermediate substrate A, but not on minimal medium plus intermediate substrate C.

Answer:

c. The mold can grow on minimal medium plus intermediate substrate B, but not on minimal medium plus intermediate substrate A.

Explanation:

Let us first diagram the pathway for a better understanding.

The normal organism produces four enzymes that convert substrates in the medium that allow it to survive, grow, and reproduce.  

initial substrate ------------> A ----------------> B ----------------> C ----------------> AA

                           <em>Enzyme 1       Enzyme 2        Enzyme 3         Enzyme 4</em>

Any mutation on the Neurospora´s enzymes will not let the organism grow on the minimal medium because it will not be able to convert the minimal substrate into the following one, because the mutated enzyme will not accomplish its original function.

  • So if the mutation occurs in enzyme 1, the organism will <em>not be able to convert the initial substrate into intermediate substrate A</em>. And the rest of the reaction will not be possible either because of the lack of substance A.

initial substrate -----X----> A -------X-----> B ------X--------> C ------X-------> AA

          <u> </u><u><em>mutated Enzyme 1 </em></u><em>      Enzyme 2       Enzyme 3        Enzyme 4</em>

<em />

  • If the mutation occurs in enzyme 2, the organism will <em>not be able to convert the intermediate substrate A into intermediate substrate B</em>. And the rest of the reaction will not be possible either because of the lack of substance B.

initial substrate ------------> A -------X--------> B -------X------> C --------X-----> AA

                           <em>Enzyme 1   </em><em>mutated Enz. 2</em><em>     Enzyme 3         Enzyme 4</em>

<em />

  • If the mutation occurs in enzyme 3, the organism <em>will not be able to convert the intermediate substrate B into intermediate substrate C</em>. And the last reaction will not be possible either because of the lack of substance C.

initial substrate ------------> A ----------------> B -------X--------> C -------X------> AA

                           <em>Enzyme 1       Enzyme 2     </em><u><em>mutated Enz. 3</em></u><em>     Enzyme 4</em>

<em />

  • And if the mutation occurs in enzyme 4, the organism <em>will not be able to convert the intermediate substrate C into the essential amino acid</em>.

initial substrate ------------> A ----------------> B ----------------> C -------X-------> AA

                           <em>Enzyme 1       Enzyme 2        Enzyme 3      </em><u><em>Mutated Enz. 4</em></u>

<u><em /></u>

But, if we artificially add to the medium the substrate that should be produced by the original enzyme (and that is not converted because of the mutation), then the organism will grow and survive because the other enzymes will be able to produce the essential amino acid.

So, if enzyme 2 is the only enzyme mutated, the organism will not be able to live in a medium with substrate A because the mutated enzyme will not convert the substrate A into B. There will <em>not be B substrate in the medium, and the other enzymes will not produce the essential amino acid</em>. So if the mutation occurs in enzyme 2, substrate A is useless to the organism because it will not survive.

But if we add the intermediate substrate B to the medium, the organism will survive. In a medium with substrate B, all the other reactions will be possible, and the organism will get the essential amino acid. The artificial addition of B substrate will replace the function of the original enzyme 2 -which is the one that converts A into B-.

3 0
3 years ago
The second stage of the digestive process takes place in the
Lunna [17]
The second stage takes place in the estogagus which leads to the stomach then the small intestine then the big intestine and then the toilet there
you welcome
6 0
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which of the following terms refers to an object that orbits the sun and has enough gravity to be spherical but has not cleared
Komok [63]
The term referred to the sentence above is : dwarf planet
8 0
3 years ago
If you have an element with atomic no of 3 and 14 nuetrons how many what would be the atomic mass
pochemuha
I think this is answer but i'm not sure it is right or wrong   3+14= 17









































7 0
3 years ago
Please help me and hurry
miskamm [114]

Answer:

5

Explanation:

-5 0 5 10

---------------------------------------------------------

start at 0, move right 3, so ur at 3. then move left 4, so its -1. Then 6 to the right so its 5.

0+3=3-4=-1+6=5

8 0
3 years ago
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