THE MOLECULAR BASIS OF INHERITANCE
THE HUMAN GENOME
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Most genetic disorders are caused by the expression of ____
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recessive alleles
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2 dominant alleles
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one dominant allele
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sex-linked heredity
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Explanation:
Detailed explanation-1: -Most genetic disorders that result in sterility or childhood death are caused by recessive mutations, DNA sequence variants that are harmless when a person carries only one copy.
Detailed explanation-2: -"Recessive” means that 2 nonworking copies of the gene are necessary to have the trait or disorder. One is inherited from the mother, and 1 from the father. If you have only 1 recessive gene, you are a “carrier” for the trait or disease, but you do not have any health problems from “carrying” 1 copy of the gene.
Detailed explanation-3: -Cystic fibrosis is the most common inherited autosomal recessive disease in the Caucasian population.
There is 1 question to complete.