# Probability

## The Clinical Geneticist And The Punnett Square, The Statistical Geneticist And The Chi-square Test

Probability measures the likelihood that something specific will occur. For example, a tossed coin has an equal chance, or probability, of landing with one side up ("heads") or the other ("tails"). If you drive without a seat belt, your probability of being injured in an accident is much higher than if you buckle up. Probability uses numbers to explain chance.

If something is absolutely going to happen, its probability of occurring is 1, or 100 percent. If something absolutely will not happen, its probability of occurring is 0, or 0 percent.

Probability is used as a tool in many areas of genetics. A clinical geneticist uses probability to determine the likelihood that a couple will have a baby with a specific genetic disease. A statistical geneticist uses probability to learn whether a disease is more common in one population than in another. A computational biologist uses probability to learn how a gene causes a disease.

## Additional topics

- Protein Sequencing - The Building Blocks Of Proteins, Sequencing Techniques
- Privacy - The Potential For Misuse Of Medical Records, Genetic Information In The Justice System
- Probability - The Clinical Geneticist And The Punnett Square
- Probability - The Statistical Geneticist And The Chi-square Test
- Probability - The Computational Biologist And Blast
- Other Free Encyclopedias