Three alleles namely IA,IB and i control the blood grouping in human beings. How many genotypes are likely to be present in human population ____________.
Three alleles namely IA,IB and i control the blood grouping in human beings. How many genotypes are likely to be present in human population ____________.
The correct option is D 6
ABO blood group in human beings is first discovered
by Landsteiner. The fourth blood group,
AB was discovered by de Castello and Steni. Bernstein showed that these groups
are controlled by three alleles – IA,IB and IO/i. These alleles are autosomal and follow the
Mendelian pattern of Inheritance. Alleles IA, IB produce
a slightly different from of sugar while IO does not produce any
sugar. Because humans are diploid organisms, each person possess any two of the
three ‘I’ gene alleles. IA
and IB are completely dominant over IO, but when IA
and IB are present together, they both express their own types of
sugar, thus, behaving as codominant alleles.
So, the correct option is ‘6’.
ABO blood group in human beings is first discovered by Landsteiner. The fourth blood group, AB was discovered by de Castello and Steni. Bernstein showed that these groups are controlled by three alleles – IA,IB and IO/i. These alleles are autosomal and follow the Mendelian pattern of Inheritance. Alleles IA, IB produce a slightly different from of sugar while IO does not produce any sugar. Because humans are diploid organisms, each person possess any two of the three ‘I’ gene alleles. IA and IB are completely dominant over IO, but when IA and IB are present together, they both express their own types of sugar, thus, behaving as codominant alleles.
So, the correct option is ‘6’.
