GRE Subject Test: Biology

This subject covers the key concepts and topics tested in the GRE Subject Test for Biology, including cellular biology, genetics, and ecology.

Cell Structure and FunctionMolecular GeneticsPrinciples of Ecology
Cellular Metabolism and BioenergeticsGenetic Inheritance and Mendelian LawsPopulation Dynamics and Evolution
Biotechnology in MedicineEcology and Environmental ConservationGenetic Testing and Personalized Medicine
Time Management for the GRE Biology TestActive Recall and Practice TestingBreaking Down Complex Questions
Cell Structure and F...Molecular GeneticsPrinciples of Ecolog...Cellular Metabolism ...Genetic Inheritance ...Population Dynamics ...Biotechnology in Med...Ecology and Environm...Genetic Testing and ...Time Management for ...Active Recall and Pr...Breaking Down Comple...
Advanced Topics

Genetic Inheritance and Mendelian Laws

The Rules of Heredity

Gregor Mendel discovered basic laws of inheritance by studying pea plants. His work laid the foundation for modern genetics.

Mendel's Laws

  • Law of Segregation: Each parent gives one allele for each trait.
  • Law of Independent Assortment: Genes for different traits are passed independently.

Punnett Squares

These handy diagrams help predict the probability of offspring inheriting certain traits.

Modern Extensions

  • Incomplete dominance
  • Codominance
  • Polygenic inheritance

Why It's Cool

Understanding inheritance patterns helps us predict genetic diseases, breed plants/animals, and study evolution.

Examples

  • Predicting the chance of brown or blue eyes in children.

  • Breeding pea plants for tall or short traits.

In a Nutshell

Mendelian genetics explains how traits are passed from parents to offspring using simple mathematical ratios.

Next
Population Dynamics and Evolution