Answer:
The corpus callosum.
Explanation:
The cerebellum structure consists of two halves. The right and the left. This is connected to the corpus callosum that contains a lot of nerves
The cell membrane. (It also could be cytoplasm because it supports the organelles. But I think it is the cell membrane because it says barrier, and the cell membrane is the cell's barrier between it and the outside of the cell.)
The cell membrane is the outer most layer of the animal cell. It is selectively permeable, so it lets good things in and keeps bad things out. It also helps larger things that the cell needs to get in such as glucose by the process of endocytosis.
Scientists sometimes make discoveries that lead to a need for new laws. This illustrates the general situation of science not just biology in pursuing scientific inquiry. Some of the classical experiments like the Mendel's crosses of the pea plant to understand the inheritance pattern of various observed traits required Mendel to come up with a hypothesis turned theory of independent assortment of genes. With substantial experimental trails on pea plants this theory turned into a law due to the increased number of supporting evidence.
Answer:
During fetal DNA replication
Explanation:
In certain areas of Africa, the sickle cell mutation has a high frequency because it confers an adaptive advantage against malaria which is endemic to this region.
<h3>What is natural selection?</h3>
Natural selection is a mechanism that drives evolution in natural populations, which in case we are observing stabilizing selection because it acts to stabilize the frequency of different alleles.
In certain regions in the African continent, the sickle cell mutation exhibits a high frequency since it is able to confer resistance against malaria which is an endemic disease located in this region.
Therefore, with this data, we can see that stabilizing selection acts to increase the frequency of the sickle cell mutation, which is harmful in regions where malaria is not endemic but increased in certain parts of Africa due to the incidence of malaria, thereby being an adaptive trait for these geographic areas.
Learn more about stabilizing selection here:
brainly.com/question/8563440
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