REPRODUCTION
REPRODUCTION IN ORGANISMS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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True
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False
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Either A or B
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None of the above
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Detailed explanation-1: -Nearly every cell in a person’s body has the same DNA. Most DNA is located in the cell nucleus (where it is called nuclear DNA), but a small amount of DNA can also be found in the mitochondria (where it is called mitochondrial DNA or mtDNA).
Detailed explanation-2: -The building blocks and shape of DNA molecules in humans, plants and every living thing is the same–we all have the famous A, C, G, and T’s. It’s the order of these letters that makes us different.
Detailed explanation-3: -Do all plants have the same number of chromosomes? No, this is not always true. Each species of plants has a set of chromosomes which is not always the same. Plants contain polyploidy, varieties can be produced in the same species with different ploidy by crossing over techniques.
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”.