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प्रश्न
A couple with a newborn baby is troubled that the child does not resemble either of them. Suspecting that a mixup occurred at the hospital, they check the blood type of the infant. It is type O. Because the father is type A and the mother type B, they conclude that a mixup has definitely occurred. Are they correct? Give reason for your answer.
उत्तर
They are not correct. The father with blood group A has genotype IAIO. The mother with blood group B has genotype IBIO. Hence, the possible genotypes of the children will be IAIB, IAIO, IBIO and IOIO. Thus, the possible blood groups of children will be AB, A, B and O. Hence, if the father has blood group A, and the mother has blood group B, it is possible for them to have children with blood group O.
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संबंधित प्रश्न
Write the types of sex-determination mechanisms the following crosses show. Give an example of each type.
(i) Female XX with Male XO
(ii) Female ZW with Male ZZ
There are ................ pairs of chromosomes in the human being.
Fill in the following blank with suitable word :
The...............chromosomes for a ............are XX whereas that for a ..............are XY.
The sex of a child is determined by which of the following?
(a) the length of the mother's pregnancy
(b) the length of time between ovulation and copulation
(c) the presence of and X chromosome in an ovum
(d) the presence of a Y chromosome in a sperm
Choose the correct answer from the four options given below :
In a human male, a sperm will contain :
Choose the correct answer:
Males have more chances of suffering from sex-linked disease because of ___________
Write the functional activity of the following structure:
Heterosomes
Which of the following combination of chromosome numbers represents the correct sex determination pattern in honey bees?
Which of the following decides the sex of the child?
Human offspring’s sex is determined ______
