Hemophiliac's blood fails to clot properly after an injury, because of the following reasons, EXCEPT:
Correct answer: D. A reduction in hemopoietic stem cells
- A. A reduction of blood clotting factors
- B. A malfunction of blood clotting factors
- C. A complete absence of blood clotting factors
- D. A reduction in hemopoietic stem cells
Explanation
The correct answer is Option D: A reduction in hemopoietic stem cells. Hemophilia is specifically related to deficiencies or malfunctions of certain blood clotting factors, not the stem cells responsible for producing blood cells. While a reduction in hemopoietic stem cells can lead to blood disorders, it is not the cause of hemophilia.Option A, B, and C discuss deficiencies or malfunctions of blood clotting factors, which are the hallmark causes of hemophilia and contribute directly to the blood's inability to clot properly.
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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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