Directional selection favors one of the extreme phenotypes. Option B). Fewer plants with thin seed coats will be able to germinate, leading to a higher proportion of plants that produce seeds with thick seed coats.
<h3>What is directional selection?</h3>
Directional selection increases in the proportion of individuals with an extreme phenotypic trait.
There must be a selective pressure or environmental pressure acting on populations to lead the species to increase the number of individuals expressing that extreme phenotype.
This selection presents more frequently in those cases in which interactions between living organisms and the environment modify in the same direction.
In the exposed example the environmental pressure is drought during several years.
Drought periods decreases the fitness of plants that produce thin seed coats because they dehydrate before germinating.
Originally the population expressed both types of seeds. But after the drought pressure, only plants that produce seeds with thicker coats got to survive and reproduce.
The correct option is B). Fewer plants with thin seed coats will be able to germinate, leading to a higher proportion of plants that produce seeds with thick seed coats.
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AAA-TTT
T pairs with A.
A pairs with T.
When Amanda poured some of the liquid into a test tube, the water curved upwards because of adhesion.
Water has many interesting properties. One of its many properties is its affinity for adhesion. Adhesion is simply what occurs when a molecule of one kind is attracted to a different kind of molecule.
In the case of Amanda, the water will have curved upwards as an example of the adhesion properties of the water, in which its molecules were attracted towards the edges of the test tube.
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They attach to the centromeres and pull apart new chromosomes to the opposite poles of the cell
Answer:
one it must be in direct orbit of the Sun and not be a moon around another body II it must be massive enough for it to have become spherical in shape under its own gravity and unlike a planet it must have not cleared the neighborhood around its orbit
