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maw [93]
2 years ago
13

The process of evolution, or genetic change over time, has resulted in the wide variety of living things that exist today. What

part do mutations play in the evolution of species
Biology
1 answer:
irga5000 [103]2 years ago
3 0

Answer:

Evolution has occurred thanks to many random changes in the DNA base sequence that we call mutations. This is caused by errors in the genetic information contained in the cells - due to chemical or physical factors - and also its subsequent propagation by replication, being transcendent for evolution those that will later be transmitted to the offspring: somatic cells if reproduction it is asexual and the gametes if it is sexual. For this reason, we say that mutations are the primary source of gene variability, essential for evolution to exist. Thus, without mutations, the genetic variability that natural selection needs would not be present - in addition, such diversity is important for the population to more successfully mold (or adapt) to continuous environmental changes.

Explanation:

A mutation is a change in the information contained in the DNA of cells. The DNA of an organism influences all aspects of its life. Therefore, a change in the DNA of an organism can produce changes in all aspects of its life. The mutation increases the genetic variability of the species and contributes to the adaptation of the species to the environment and to their evolution. Viability and fertility are associated with adaptation, the total capacity of an organism to survive and reproduce. The effect of a mutation in any generation is minimal, but over time a considerable amount of variation from mutations can accumulate. Most mutations are harmful and their carriers die, but those that produce an improvement remain in the species and are essential in the evolutionary process. When mutations appear in a certain population, the genotype changes from generation to generation, appearing individuals with characteristics different from those of their predecessors. This is how the population evolves, being able to originate new species. Mutations that are detrimental to the carrier individual will be eliminated by natural selection.

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Why are mutations that alter the amino acid sequence usually harmful?
OlgaM077 [116]

Answer:

This probably because they destroy a given character or give rise to a new one.

Explanation:

 Alteration here are the permanent changes found in the DNA structure. And are totally inheritable. An example is the case of sickle cell anaemia and haemophilia. People with this anaemia trait hardly live and reproduce even though they do not show ill effects.

 Therefore, this mutation alteration is harmful because they destroy a given character.

4 0
3 years ago
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Why didnt the present shapes of the continents fit perfectly into a supercontinent
kirill115 [55]
The borders (coastlines) of the continents underwent a number of changes since the split. Often, chunks of land were washed away with water, slowly or in bigger portions. The coast was generally "smoothed" by the ocean currents too, and in some places more land was added with the material that the ocean currents brought.

Then, the tectonic plates continue to move, so this adds to the changes of the shape of the continents. 
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3 years ago
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What does the mitochondria need to make energy for the cell?
Pachacha [2.7K]
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3 0
3 years ago
The age of oceanic bedrock on either side of a mid-ocean ridge is supporting evidence that at the ridges, tectonic plates are __
ratelena [41]

The age of oceanic bedrock on either side of a mid-ocean ridge is supporting evidence that at the ridges, tectonic plates are Diverging .

Explanation:

The underwater mountain range is the mid oceanic ridge, which were formed as a result of plate tectonics.  when the convection current goes up in the mantle present beneath the oceanic crust results in the uplifting of the ocean floor.

Which leads to the formation of the tectonic plates through magma, that meet at divergent boundaries. The density and the age and the thickness of these oceanic crust increases due to the distance from the ridges. The mid oceanic ridges has been split on two sides as matching stripes ,

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3 years ago
3.How have scientists' ideas of human evolution changed over time<br><br> Please Hurry
Alex

Answer:

They once thought that humans came from monkeys and apes but  now they think they come from a ancient ancestor not from the monkey or ape family.

Explanation:

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