Science
A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits – blood group A or O – is dominant? Why or why not?
Answer
No, the given information is not sufficient to tell which of the traits is dominant because we don't know all possible blood groups of all the progeny.
The father's blood group is A, which means he can be homozygous (AA) or heterozygous (AO). Similarly, mother can also be homozygous or heterozygous.
Related Questions
How do Mendel's experiments show that traits may be dominant or recessive?
How do Mendel's experiments show that traits are inherited independently?
How is the sex of the child determined in human beings?
A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing white flowers. The progeny all bore violet flowers, but almost half of them were short. This suggests that the genetic make-up of the tall parent can be depicted as
- TTWW
- TTww
- TtWW
- TtWw