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Verdich [7]
3 years ago
8

What is meant by a mechanism of evolution?

Biology
1 answer:
Effectus [21]3 years ago
6 0

The mechanisms of evolution allow evolutionism to be explained according to the scientific method. Through the mechanisms of evolution we can understand how the equilibrium in a population is changed and the consequences that this change causes.

The most important mechanisms of evolution include:

  • Trial and error: It is the simplest of all methods of evolutionism; in principle it is typical of microorganisms with a lot of progeny in each generation and relies on the later mechanism of natural selection.
  • Natural Selection: In the strict and exclusive sense, it would act as the only method of effective evolution, since random modifications alone would not achieve the observed evolution of living beings. Assuming the randomness of modifications, the earlier trial and error method would be more general than natural selection, since it does not always operate.  Natural selection is characterized as a method of verification exogenous to the evolutionary system itself or the system of creation of genetic modifications, as it acts “a posteriori”.
  • Exhaustive proof or simulation: Of the results predicted by the genetic modifications made. In certain cases, living organisms may prove the effect of replacing, for example, one protein with another, if the evidence is satisfactory with respect to the functionality of the new mechanism of evolution; and there is no risk of having side effects on suppression of the first protein, genetic modification could be carried out without major problems as the guarantee objective would be fully covered.
  • Partial Proof of Modifications: When an evolutionary system is complicated and contains many interrelationships, exhaustive proof of the effects of a small modification will not be possible and will have to be limited to more or less extensive but not total proof. To the extent that the range of possible effects of genetic modification has been covered, it will carry greater or lesser risk. The risks of this method are very well known to computer programmers.

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In a population of gerbils ,long hair is completely dominant over short hair .if 18percent of the population has short hair , ca
oee [108]

Answer: 49%

Explanation:

* long hair = P

* shirt hair = q using the Hardy-Weinberg equation for genotypic frequencies

* p^2 + 2pq + q^2 =1

*first use the equation to solve for the known value 18% hh

.18 = q^2

Square root .18 = q

So q = .42

* plug this allelic frequency in to p+q = 1

Which will give you the frequency of dominant alleles

1 - .45 = p So P = .58

Then just plug the P and q values found into the portion of the equation for heterozygous offspring.

2(.58)(.42)

Which is .49 or 49%

The entire population should be 33% homozygous dominant 49% heterozygous and 18% homozygous recessive.

5 0
3 years ago
Read 2 more answers
As a country progresses from the preindustrial stage to the postindustrial stage, what will happen to the birth rate and death r
AnnZ [28]

Answer:Both birth rate and death rate will decrease.

Explanation:

Demographic transition: The process whereby a country moves from high birth and death rates to relatively low birth and death rates.

The decline in death rate is due to better economic and social conditions of the country which leads to control of pre-existing diseases, better medical facilities,more food production,increased jobs,better sanitation and hence better quality of life.

Decline in birth rate is due to improved quality of life and also could be due to availability of family planning services in highly developed countries.Moreover access to education especially in female population has created awareness regarding birth control.

4 0
3 years ago
Which of the following statements are true? Select all that apply.
Digiron [165]

Answer:

C. A protein’s structure depends on the order of its amino acids.

6 0
3 years ago
In what ways is the filtrate that enters the glomerular capsule different from the blood? Help please?
dmitriy555 [2]
The glomerular filtrate is different from the blood because the filtrate does not contain red blood cells and plasma proteins. 
3 0
3 years ago
When two atoms transfer electrons, the bond formed is called a/an _______ bond.
MissTica

Answer:

ionic bond

Explanation:

When two ions transfer electrons or bond together they make an ionic bond.

3 0
3 years ago
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