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Five Mark Questions :
Explain the genetic basis of blood grouping in human population.
Explain the genetic basis of blood grouping in human population.
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Solution
Blood group in humans are inheritable traits and inherited from parents to offspring on the basis of Mendel's law. That group inheritance depends upon the genes received from parents. Genes controlling blood group in man are 3 instead of two and are known as multiple alleles. All these three genes or the allele are located on the same locus on chromosomes. A person can have only two of these three genes at a time which may be either similar or dissimilar in nature. These genes control the production of blood group antigen in the offspring. In human blood grouping system, there are three alleles A, B, O. The 3 alleles of human blood group are said to be codominant because both are expressed in the phenotype A and B.
Blood group in humans are inheritable traits and inherited from parents to offspring on the basis of Mendel's law. That group inheritance depends upon the genes received from parents. Genes controlling blood group in man are 3 instead of two and are known as multiple alleles. All these three genes or the allele are located on the same locus on chromosomes. A person can have only two of these three genes at a time which may be either similar or dissimilar in nature. These genes control the production of blood group antigen in the offspring. In human blood grouping system, there are three alleles A, B, O. The 3 alleles of human blood group are said to be codominant because both are expressed in the phenotype A and B.
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