Answer:
Directional Selection
Explanation:
The type of natural selection that favors one of the extreme phenotypes over the intermediate and another extreme phenotype is called directional selection. Here, the extreme phenotype exhibits better survival and reproductive fitness over the other phenotypic ranges.
In the given example, the frequency of the heat-tolerant allele in microbes is shown to increase under the conditions of higher temperatures of the water of the springs in which they live.
When the temperature of spring water is increased, the frequency of the heat-tolerant allele is reduced and is increased again upon an increase in water temperature.
Since the natural selection favors the extreme phenotype (microbes with heat tolerance) when the spring water exhibits higher temperatures, it is directional selection.
Answer:
integumentery system
Explanation:
your skin is actually the first protection against illness-causing pathogens.
Answer:
A. Surprising.
Explanation:
The above scenario is completely surprising because there are 10 planets in solar system and considering all the orbit approximately in the same plane. But amazingly half (five) of the planets orbit counterclockwise, while remaining five planets orbit clockwise (opposite direction).
Reasonably, all planet should be orbit in same direction but it's surprising that in a same solar system half are orbit clockwise and half are anticlockwise.
Enzymes are biological molecules (typically proteins) that significantly speed up the rate of virtually all of the chemical reactions that take place within cells. They are vital for life and serve a wide range of important functions in the body, such as aiding in digestion and metabolism.
