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Sagot :
The inheritance pattern is related to how genetic patterns are distributed and/or inherited.
A dominant pattern means that having only one allele would be enough to express the trait. This happens because our alleles are always in pairs, and for a dominan trait to be expressed only one allele is needed. For example, Huntington's disease is an autosomal dominant disease, which means that the person will receive one allele from each parent and the person will need only one of those alleles to be related to Hungtinton's disease. Even if one of the parents gives an allele that will not be related to the disease, this allele will be suppressed by the one that is related to Huntington's. Most genetic heart conditions are autosomal dominants as well.
A recessive pattern means that both alleles must be related to the trait in order to the trait to be expressed. For example, cystic fibrosis is a recessive disease, as two alleles related to the disease are needed for a person to have cystic fibrosis. So, you must receive the allele related to the disease from both parents, then it will be expressed and you would have the disease. The sickle-cell disease is another example of a recessive disease.Do you have any questions about the answer to your question? Feel free to ask.
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