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Anuta_ua [19.1K]
4 years ago
14

The graph of a function increases twice as much over each subsequent equally sized interval. Which of the following could be the

parent function of the graphed function?
Biology
2 answers:
Tomtit [17]4 years ago
5 0
A. y=2x
B. y=x2
C. y= |2x|
D. y=sqrt x

The Correct Answer is B.
Digiron [165]4 years ago
5 0

Answer: The answer is y=2^x

Explanation:

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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!

5 0
3 years ago
Anaerobes carry on whereas aerobes carry on cellular respiration
Tcecarenko [31]

Answer:

Anaerobes carry on cellular respiration in the absence of oxygen, whereas aerobes carry on cellular respiration in the presence of oxygen.        

Explanation:

Many of the cell processes needed need some energy to occur. Cellular respiration is the process by which cells degrade organic compounds and turn them into energy. Cellular respiration follows two ways, which depend on the presence or absence of oxygen, and both of them begin with the process of glycolysis, which occurs in the cytoplasm and does not need oxygen to occur.

<u>Aerobic Respiration</u>

  1. Occurs in the presence of free oxygen.
  2. Series of reactions by which pyruvic acid (product of glycolysis) turns into CO₂ and H₂O, producing many ATP molecules.
  3. Respiration occurs in the mitochondria.
  4. Takes place in two steps or stages: Krebs cycle and electron transporter chain.
  5. Glycolysis and Krebs cycle produce electrons, which then travel along the electron transporter chain while releasing energy, and ATP is produced.

<u>Anaerobic Respiration </u>

  1. Occurs in the absence of free oxygen
  2. Series of reactions by which using pyruvate (product of glycolysis) 2 ATP molecules van be produced.
  3. There are two ways in which anaerobic respiration can be produced: lactic fermentation and alcoholic fermentation.
  4. Lactic fermentation produces lactic acid and 2 ATP
  5. Alcoholic fermentation occurs in two steps, and the final products are ethylic alcohol, 2ATP, and 2 CO₂
  6. The whole anaerobic process occurs outside the mitochondria.
6 0
3 years ago
Rockets have been used in which of the following areas? (Choose 3 )
Juliette [100K]
Warfare jet engine and space exploration
7 0
3 years ago
Which has the greater momentum, a car traveling at 8 m/s or an identical car traveling at 5 m/s?
ruslelena [56]

The car traveling 8 m/s. Good luck.

6 0
4 years ago
 Which of the following is true regarding extinction? 
mestny [16]

<span>C. Single events or several causes working together to produce extinction in a short period is referred to as mass extinction.

Example:
</span>Destruction of forests, mountains, and bodies of water to satisfy human needs result to the imbalance of nature which also give rise to global warming.

Animals and plants have lost their habitats. They lost their means to live. They lost their food sources and they suffer and die because of humans irresponsible acts.

hope I helped!!

6 0
3 years ago
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