The correct answer is natural selection. C is the answer!
Bacteria has a stronger resistance that usually produces even more resistant bacteria, and the cycle just repeats itself, making more and more resistant bacteria. This process is called Natural Selection.
Hope that helped!
-Chris
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Hello!
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❖ Structures called spindle fibers are attached to the centromeres. Spindle fibers divide the genetic material in a cell (sister chromatids).
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Answer: Sea Turtle
Explanation:
Sea turtles especially the green sea turtle Chelonia mydas is the most closely related to Dr Digger's creation having shell covering cavity covering the whole body except head and four limbs known as flippers which make them paddle along swiftly while swimming Thier mouth without teeth is shaped like a beak which makes them perfect herbivores which feed on mostly algae and grasses in the sea. Currently there are about 7 species of the sea turtle.
Answer:
A population bottleneck occurred, altering the resulting allele frequencies.
Explanation:
A population bottleneck occurs when the size of a population is reduced by at least a generation. In this case, genetic drift acts more quickly to reduce genetic variation in small populations, but going through a “bottleneck” can greatly reduce variation, even if the bottleneck does not last for many generations. This effect called a bottleneck usually happens when a major disaster occurs in the population's habitat, changing the allelic frequencies and even the genetic variability of the population.
The population bottleneck can be seen in the question above, where after a forest fire, only 20 beetles remain in a population of beetles. 18 of them are green and 2 of them are brown.
