MCQ practice · SSC Biology Board questions · Chapter 12: Heredity in Organisms and Biological Evolution
Which of these applies to thalassemia major?
Think it through first, then pick an option.
- a The gene comes from both mother and father
- b The gene comes from the father or the mother
- c It shows no symptoms
- d It acts only as a carrier of the gene
Answer and explanation
Correct answer: a The gene comes from both mother and father
In thalassemia major the child gets the gene from both father and mother.
Why the other options are wrong
- b The gene comes from the father or the mother: Getting the gene from only one of the parents is minor.
- c It shows no symptoms: Showing no symptoms is a mark of minor. The right answer is The gene comes from both mother and father.
- d It acts only as a carrier of the gene: Acting only as a carrier is a mark of minor.
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