1. What is the Genealogy Probability Equation?

The genealogy probability equation calculates the likelihood of a genetic relationship based on shared centimorgans (CM) and total shared DNA (T). It provides a quantitative measure of genealogical connections.

2. How Does the Calculator Work?

The calculator uses the genealogy probability equation:

Where:

• \( P \) — Probability (dimensionless)
• \( CM \) — Shared centimorgans (dimensionless)
• \( T \) — Total shared DNA (dimensionless)

Explanation: The equation calculates the probability of a genealogical relationship by comparing the shared centimorgans to the total possible shared DNA.

3. Importance of Genealogy Probability

Details: Accurate genealogy probability calculation is crucial for determining family relationships, verifying ancestral connections, and building accurate family trees.

4. Using the Calculator

Tips: Enter the shared centimorgans and total shared DNA values. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: What are centimorgans (cM)?
A: Centimorgans are units of genetic linkage that represent the likelihood of recombination between two markers.

Q2: What is a typical probability value?
A: Probability values range from 0 to 1, with higher values indicating stronger genealogical relationships.

Q3: How accurate is this calculation?
A: The calculation provides a basic probability estimate, but actual relationships may vary based on other genetic factors.

Q4: Can this be used for all relationships?
A: This provides a general probability estimate but may need adjustment for specific relationship types.

Q5: Where can I get CM and T values?
A: These values can be obtained from DNA testing services that provide shared segment data.