Atypical prokaryotic cell has about 3,000 genes in its dna, while a human cell has about 20,500 genes. about 1000 of these genes are present in both types of cells.
a) based on your understanding of evolution, explain how such different organisms could have this same subset of genes.

All eukaryotic species came from a common ancestor.

Millions of years ago, there were a meteorites fall that almost kills all living organisms on Earth, only a few survive and those evolve into all species as we know them now.

And this is why into DNA code, you can find similar parts or sequences of genes in a lot of different species.

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what do the different brain waves do?

explanation:

brainwaves are produced by synchronised electrical pulses from masses of neurons communicating with each other. brainwaves are detected using sensors placed on the scalp. brainwave speed is measured in hertz (cycles per second) and they are divided into bands delineating slow, moderate, and fast waves.

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