Classical hemophilia, or hemophilia a, is a genetic disorder in which blood fails to clot. in one family, males are shown to carry and express the defective allele in every other generation, while females seem unaffected. based on the information given it could be concluded that hemophilia is

The correct answer would be X-linked recessive disorder.

It is an X-linked recessive disorder due to which it is more common in males as compared to females.

Males carry only one X chromosome due to which presence of the single mutant allele is enough to produce the phenotype.

In contrast, the females carry two X chromosomes due to which they require two copies of mutated allele. Thus, the chances of a female to express a disease is less.

answer: the blood-brain barrier is a layer of specialized membranes and cell processes designed to keep undesirable substances from passing from the bloodstream into the precious tissues of the brain. while the blood-brain barrier does keep most bad things out of the central nervous system, it is not impermeable.

explanation:

name and explain one of the event that occurs during meiosis that increases the variation in offspring even more than simple reproduction?