So the gene for e.g. blue eye colour codes for the amino acid sequence that forms a blue pigment. The gene for sickle cell anaemia has a mutation that changes the shape of haemoglobin.
How are attibrutes such as the shape of facial features, predisposition to balding or mental health issues etc. genetically inherited? Do they all really happen because of different proteins?
In: Biology
So this question is kind of like saying “my cities tallest building looks very different from Sears tower and the Burj Khalifa, it is different just because of the cement used?”
The answer is yes and no. The differences in genetics are expressed as proteins. There is no other way that different genes make people look differently.
The interesting part of genetics is epigenetics, which can involve changes made over many generations; and the environmental effect on genetics, one of my favorite example of this is people’s response to stress over many years of life: it is determined by their genes, their environment at the time, and their personal actions to cope.
Yes, the differences you see in people is based on proteins that are coded for in genes, but it’s more complicated since not everyone has the same response to the same genes, this is why people are able to see the differences between identical twins. They have the same genes, but they appear and act slightly different
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