Answer:
The correct answer will be option-D
Explanation:
Corpus callosum is a nerve tract present below the cerebral cortex found in the placental mammal only. The nerve tract is thick and wide and connects the right and light cerebral hemispheres.
The structure contains about 200 million neurons with varying degree of myelination of neurons.
The studies on corpus callosum has shown that corpus callosum is formed after 20 weeks of gestation and continuously grows after birth. The process of myelination which is the formation of myelin sheath around neurons takes place upto 8-9 years.
Thus, option-D is the correct answer.
Answer:
Hope I helped :)
Explanation:
They developed many new techniques for buildings and construction of all types including the invention of concrete, Roman roads, the invention of Roman arches, and incredibly well-built aqueducts that ran for miles before they reached the end and delivered fresh water.
Answer:
The reform group was Progressivism.
Explanation:
Progressivism was a broad movement centered on reforms that reached its height in the United States in the early 20th century. It was created in response to the profound changes that were being experienced due to the rapid growth of .large corporations, and the levels of pollution and vulnerability of the general public to the negative dimensions of modernization. They were also outspoken about their fears of corruption in American politics. An example of a Progressive was Louis Brandeis who was an associate justice on the Supreme Court.
Answer:
Eukaryotic genetic variation occurs with VERTICAL gene transfer while prokaryotic genetic variation occurs with HORIZONTAL gene transfer
Explanation:
In Eukaryotes, genes lays on top of each since they reproduce sexually this gives rise to their genetic variation and hence the vertical gene transfer, but prokaryotes lie side by side, reproducing by conjugation, transformation and transduction. This makes their genetic variation to be horizontal.
Example is conjugation in Spirogyra.