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Vitamin-D Resistant Rickets Is a Sex-Linked Dominant Trait, Which Leads

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Vitamin-D resistant rickets is a sex-linked dominant trait, which leads to softening of the bones, which can cause fractures and deformities. Rickets is often due to a deficiency of vitamin D; however, with vitamin- D resistant rickets, ingestion of vitamin D is ineffective. Maria's mother is normal and does not display any symptoms of this disease. Maria's father, however, has the disease. Maria marries a man that does not have the disease. What is the probability that they will have a son that has the disease?


Definitions:

Mean Number

The arithmetic average of a set of values, calculated by dividing the sum of all values by the number of values.

Poisson Probability

The probability of a given number of events happening in a fixed interval of time or space when these events occur with a known constant mean rate and independently of the time since the last event.

Binomial Probabilities

The probabilities of achieving a specific number of successes in a fixed number of Bernoulli trials, characterized by only two possible outcomes.

Poisson Random Variable

A variable that follows the Poisson distribution, mainly used to model the number of times an event happens in a fixed interval of time or space.

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