A woman receives her X chromosome from:
Correct answer: B. Both her mother and her father
- A. Her mother only
- B. Both her mother and her father
- C. Her father only
- D. Extra nuclear DNA in her mother's egg
Explanation
The woman always have XX chromosome, but the man has XY chromosome, so a child always gets an X chromosome from the mother but if the man gives X chromosome, then the child will be a female. However if he gives the Y chromosome, the child will be a boy. Therefore the correct option is B.
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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