antennae thorax and abdomen all grow in the right order but because Hox genes

Antennae thorax and abdomen all grow in the right

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antennae, thorax and abdomen all grow in the right order but because Hox genes are conserved across so many species, you can remove one of them in fruit flies and replace it with a chicken Hox gene and the fly develops just fine there is no such thing as a fly gene, a tomato gene, or a human gene 3) you don’t have “the gene for” huntington’s disease it’s a mutation : we all have this gene its called the Huntingtin gene and it happens to have a repeat of 3 letters CAG, people that have this disease has a longer repeat of this gene a genes purpose is not to cause disease; the gene codes for a protein that does something in your body the dene associated with Duchenne muscular dystrophy codes for a protein that normally connects a muscle fiber to its surroundings when its mutated the protein can’t to its job which causes a disease
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4) It’s often more complicated than just 1 gene= 1 disease : this wasn’t the thinking when genetics were just getting started common diseases like asthma tend to be caused by mutations in more than one gene cancer: there are single mutations that predispose you to developing certain forms of cancer, we know that cancer is an accumulation of many mutations in many different genes and some of this mutations are known as driver mutations driver mutations: they are needed to occur to drive the cancer forward (on average breast cancer need 4 on these mutations and colon cancer needs 11 even with simple trait like hair and eye color it is not 1 gene associated many disease have to do with many genes 5)
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  • Spring '11
  • Multiple
  • DNA, RNA

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