Genetic Disease Transmission Probability

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Autosomal Recessive Diseases:

Probability that a child will inherit an autosomal recessive disease is calculated as:

[probability that dad is carrier]

multiplied by

[probability that mom is carrier]

multiplied by

[probability that dad transmits disease to child; this value is 1 if dad has the disease]

multiplied by

[probability that mom transmits disease to child; this value is 1 if mom has the disease].

X-Linked Recessive Disease:

Probability that a child will inherit an X-linked recessive disease is calculated as:

[probability that dad is carrier]

multiplied by

[probability that mom is carrier]

multiplied by

[probability that dad transmits disease to child]

multiplied by

[probability that mom transmits disease to child].

multiplied by

[probability that child is either male or female]

Additional Readings:

Basic Genetics

1. Single-Gene Disorders
2. Population Genetics
3. Genetic Disease Transmission Probability

Related Topics

1. Genetic and Developmental Disorders
2. Genetic Code, Mutations, and Translation

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