How Do Organisms Differ From One Another
How do organisms differ from one another
Organisms differ from one another because of the differences in their DNA. The DNA is so called the "blueprint of life" because its function is to code for all the information that is needed by your body to create you. The differences in the DNA among organisms is called genetic diversity.
For organisms of the same species, recall that in meiosis, the homologous chromosomes of living cells have an event called synapsis or crossing over. This crossing over of genetic material in homologous chromosomes ensures that each daughter cell that will be produced by meiosis will have no identical pair. This is important to increase the survival of the future generation and to reduce chances of acquiring genetic diseases. This is also the reason why no two organisms are the same, even if they came from the same parents, even identical twins have a very small difference in their DNA.
Evolution takes place for organisms of different species. Different species descended from different ancestors, but it is theorized that the lineage of all living things can be traced back to a single-celled bacteria. A chain of evolutionary events (specialized cells, mutation, adaptation to the environment, etc) helped flourish the genetic diversity among species, arriving to the current state of the biodiversity that we have today.
For more information about DNA and genetic diversity, you may visit the links below:
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