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Nesterboy [21]
3 years ago
13

Many animals are grouped together in a particular environment that best satisfies their needs. Which is their likely pattern of

dispersion?
A.) Clumped dispersion
B.) Uniform dispersion
C.) Random dispersion
Biology
2 answers:
Nimfa-mama [501]3 years ago
7 0
"Clumped dispersion" is the one among the following choices given in the question that <span>is their likely pattern of dispersion. The correct option among all the options that are given in the question is the first option or option "A". I hope that this is the answer that has actually come to your help.</span>
oksano4ka [1.4K]3 years ago
3 0

Answer:

The answer is A. Clumped dispersion.

Explanation:

<u><em>< Sarah ></em></u>

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Summarize key differences between allopatric and sympatric speciation. Which type of speciation is more common and why? Describe
algol13

Q1: Summarize key differences between allopatric and sympatric speciation.

As we know, the term speciation refers to the process of emergence of new specie on earth due to increase in the genetic diversity of the gene pool of an organism. Allopatric and sympatric are basically mechanisms through which speciation occurs in the world and below are the major differences between these two:

  • In Allopatric speciation, there is a physical barrier between two populations due to which no genetic exchange or gene flow can occur between two population to lead the formation of two new specie over the course of time, on the other hand, in sympatric speciation, two species live in the same geographical area and there is no physical barrier between them, but due to certain traits like preference of certain shelter or food or zygotic incompatibility they donot mate much and eventually develop into new separate species.
  • Allopatric speciation is basically nature driven and operates through natural selection, while sympatric is driven through the mechanism of polyploidy when chromosome set is replicated.
  • Allopatric speciation is common in both plants and animals, while

       sympatric is common in plants.

  • In Allopatric speciation the rate of emergence of new specie is slow fast but in sympatric speciation it is relatively faster.
  • The example of allopatric speciation is the formation of new species of Darwin's finches in Galapagos Island, while the example of sympatric speciation is Alloploid species of Wheat.

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

Q2: Which type of speciation is more common and why?

Allopatric speciation is more common in nature as compared to Sympatric because the main factor leading to speciation in Allopatry is geographical barriers while in the latter one they are nature induced gene flow in population living in same area. Hence geographical barriers are more powerful factor that greatly lessens the transfer of genes in a population while in Sympatry the reduction in genetic flow is less because after all population is living in same habitat.

Here we can take an example of Galapagos Island finches, which were a same specie of finches but when they were isolated through geographical barrier, there were remarkable difference created in the novel species of finches as compared to parent specie. On the other, If we think about the novel varieties of Wheat plants that arise through polyploidy, this polyploidy is only restricted to plants and donot occurs in animals and therefore it is less common.

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

Q # 3: Describe two mechanisms that can decrease gene flow in sympatric populations, thereby making sympatric speciation more likely to occur

The two possible mechanisms that can reduce genetic flow in symatric populations are:

1: Changes in chromosome: As we just discussed the example of polyploidy in wheat in which chromosome set is duplicated and new species are formed, in this way they are not able to breed with original parental population and this makes process of Sympatric speciation more likely to occur.

2: Habitat differentiation and sexual selection: This is the second major cause that can lead to Sympatric speciation, What happens in it that some members of a population (the cause is not known) have better preference for a certain place or habitat rather than other and some due to zygotic incompatibility cannot produce offspring due to which they are slightly isolated and with the passage of time give rise to separate specie and ultimately favors sympatric speciation mechanism.

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

Q 4:  Is allopatric speciation more likely to occur on an island close to a mainland or on a more isolated island of the same size? Explain your prediction.

Allopatric Speciation is less likely to occur in an Island close to a mainland and more likely to occur on an Isolated Island, The reason again lies in the definition of Symaptric speciation. When the Island is in close proximity of mainland, obviously there will be a continuous genetic flow between mainland and Island because of their less distance and less chances of genetic divergence. On the other hand if they are suitably separated through a substantial distance, there will be more chances that some members of specie will acclimatize new area better and with the passage of time, will evolve into new species.

Hope it helps!

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On a backpacking trip, Kenny hikes all day at a steady pace, covering 30 kilometers and burning 4000 Calories. At the school tra
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Answer: Janelle accumulated lactic acid due to underventilation.

Kenny had optimal ventilation

Explanation:

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17. According to the Mohs Hardness Scale, what's the approximate hardness of topaz?
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Answer: (A) the answer is 8

Explanation:topaz on the scale is no 8, followed by corundum no 9 and then diamond which is the hardest on no 10

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The __________ bone is located just below the urinary bladder.
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The answer to this question is the Pubis bone. The Pubis bone is a bone that is connected with the pelvic bone that is located below the urinary bladder. The pelvic bone consist of three parts such as ilium, ischium, and pubis.
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Which increase the rate of soil formation? Check all that apply.
Rainbow [258]

Answer:

large grain sizes, more precipitation, warmer temperatures.

Explanation:

Soil is the thin layer of material covering the earth's surface and they are usually formed through the process of weathering of rocks. The soil consists of mainly mineral particles, organic materials, air, water and living organisms and they interact with each other.

Large grain sizes, more precipitation, warmer temperatures are the factors that increase the rate of soil formation.

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