LABORATORY REVIEW
MITOSIS AND MEIOSIS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The DNA is the same, but each cell contains different genes
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The DNA is the same, but different genes are turned on and turned off in each cell
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The DNA is different, but the same genes are turned on and off in each cell
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The DNA is different, but each cell contains the same genes
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Detailed explanation-1: -Compared to DNA in other cells, neurons have more, less and rearranged DNA. And these changes accumulate over time.
Detailed explanation-2: -The same genome is in every cell of your body. Yet different cells in different parts of your body look and act very differently.
Detailed explanation-3: -Skin cells are found in the outer part of the human body known as the integumentary system. They play a key role in protecting the body against damage from heat, light, pathogens and chemicals. Nerves are made up of excitable neurons, which transmit electrical and chemical signals throughout the nervous system.
Detailed explanation-4: -These cells are different because they use the same set of genes differently. So even though each of our cells has the same 20, 000 or so genes, each cell can select which ones it wants to “turn on” and which ones it wants to keep “turned off”.