Respuesta :
Biologists frequently compare genes to a "code" that specifies how certain parts of the body should be built. To use a phone number metaphor, if we call a long-distance phone number.
the person we want to call. To get the person we want, we need all ten of those digits. If even one of those ten digits is changed, everything changes. On the other end of the phone, we get a completely different person.Similarly, changing just one gene in a sequence of genes can completely change the outcome. Although two brothers share roughly half of their genes, they do not share some of the gene sequences responsible for the more complex aspects of their personalities. As a result, they don't appear to be as similar as one might expect given that we share half of our genes.Assume we had four children in our family, two of whom were identical twins. The twins may be psychologically similar, but they may not resemble the other two siblings at all, and the other siblings may also be quite different from each other.
To learn mora about biological similarity here:
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