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ohaa [14]
3 years ago
7

¿CÓMO FUNCIONA LA EVOLUCIÓN?

Biology
1 answer:
Over [174]3 years ago
7 0

Answer:

Spanish: La evolución es el proceso por el cual los organismos actuales se han descendido a partir de antepasados antiguos. ... La variabilidad genética es una parte fundamental del proceso, ya que la evolución se produce cuando fuerzas selectivas actúan sobre esa variabilidad.

English: Evolution is the process by which current organisms have been descended from ancient ancestors. ... Genetic variability is a fundamental part of the process, since evolution occurs when selective forces act on that variability.

Explanation:

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In Chemistry, Dynamic Equilibrium refers to a state of balance in between two forces in motion. It exists once a reaction which is reversible ceases to change its ratio of the reactants but the substances move at an equal rate in between the chemicals.
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Which discovery supports the hypothesis that evolution of the lactase-persistence trait was driven by the use of milk in pastora
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The lactase-persistence mutations are roughly as old as the oldest milk-holding vessels or pots

lactase persistence:

Lactase persistence is an example of natural selection, which can cause some humans to continue the activity of the lactase enzyme in adulthood also.

The hereditary examinations and studies propose that the established mutation related to lactase persistence began a long time back, in populaces that started domesticating and dairy cultivation during the Neolithic age when pastoralist populaces started to utilize milk for their livelihood. As found and studied that “the lactase-persistence mutations are roughly as old as the oldest milk-holding vessels.” The cultural and social activities of dairying and drinking non-human milk gave an environment wherein lactase persistence was favorable. DNA proof demonstrates that mutation in the lactase gene emerged in these populaces around a similar time.

Know more about lactase persistence here,

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8 0
2 years ago
Use the drop-down menus to complete each sentence.
kupik [55]

Answer:

the first one is preditation, the other one is competition, the last one is cooperation. :)

Explanation:

6 0
3 years ago
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Drag the tiles to the correct boxes to complete the pairs.
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One of the grand challenges in biology is understanding how the first cells formed on Earth. Since all cells are bound by a cell
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<h2>Answer is option "A"</h2>

Explanation:

  • Oils and fats, which in science are called lipids, are known as amphipathic molecules. These molecules have two distinct ends to them: a water-loving (hydrophilic) side and a water-fearing (hydrophobic) side. While the hydrophilic sides of a lipid will associate with the water in a solution, the hydrophobic sides of the lipid all cluster together to 'hide' from the water. Lipids therefore cluster together and form spheres where the hydrophobic sides are in the center away from the water while the hydrophilic sides are on the outside, associating with the water.
  • The ability of the atoms within a group to form hydrogen bonds with the water molecules around them makes them hydrophilic. Oxygen and nitrogen atoms readily form hydrogen bonds with water molecules, so any organic molecules that have oxygen or nitrogen atoms bound to their carbon skeletons will be hydrophilic.
  • For example, if we take the molecule for cholesterol, we see the OH group on the left is hydrophilic and will form hydrogen bonds with water, while the ring structures, which only consist of hydrogen and carbon atoms, are hydrophobic and will not associate with the water.
  • There are many different kinds of lipids with different functions. Lets start by examining phospholipids, which compose the cell membranes of animals. They form lipid bilayers, with one set of hydrophilic heads facing the exterior of the cell membrane and the other set facing the interior (as you can see on the diagram on screen). The hydrophobic portions of the lipid bilayer - the lipid tails - face towards one another, which allows them to hide away from the water inside and outside of the cell.
  • So,the right answer is option A "amphipathic molecules".

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