Gregor Johann Mendel

Brought to you by Alex Williams and Stephan Dosch


Gregor Mendel, through his work on pea plants, discovered the fundamental laws of heredity. He understood that genes (or as he called them: factors) come in pairs and are inherited by offspring as distinct units, one from each parent. He recognized the mathematical patterns of inheritance from one generation to the next and from this understood how the two inherited factors interacted to produce the organism's physical appearance.


Click on the links below and answer the corresponding questions.
A quick biography of Gregor Mendel
  1. What Was Mendel's Occupation?

  2. What did Mendel Attend College For?

  3. Did Mendel ever Teach?

  4. How Many Laws Did Mendel Form based off of his experiments?

  5. What accolades did Mendel receive for his groundbreaking research in Genetics?
The experiments that Mendel used and what he concluded from them. Click on the Pre-1920s section of the timeline and find Mendel (he is all the way on the right of the timeline). Read his bio and the animation "Mendel and Pea Plants"
  1. What are three reasons why Mendel chose to study pea plants? What makes them one of the best organisms to study genetics on?

  2. Record the Characteristics that Mendel tracked in Pea Plants.

  3. What is meant by pure breed?

  4. How Did Mendel obtain pure breed Seeds?

  5. What is meant by an organisms phenotype?

  6. What is meant by an allele?

  7. What is a hybrid? Which allele is expressed in the hybrid's phenotype

  8. Define the terms homozygous and heterozygous.

  9. What are Mendel's three laws?

Go to the right on the timeline and click the animation "Rediscovering Mendel's Laws" next to the three scientists: Carl Correns, Hugo de Vries, and Erich von Tschermak-Seysenegg.
  1. Why do you think Mendel's laws went unnoticed by the scientific community for over one hundred years?

  2. why would a microscope have been helpful to mendel in his research?

Mendel's Principles can be summarized in three laws: the Law of Independent Assortment, the Law of Segregation and the Law of Dominance.
  1. Explain the Law of Dominance.

  2. Explain The law of Independent Assortment.
Mendel's original paper, translated from German
  1. How did Mendel chose his plants for his experiment?

  2. How many replicates did Mendel Use?

  3. Mendel's paper was published before genes had been discovered. What word did mendel use that translates today into "gene?"



FINAL PROJECT: Make your own puzzle (of any Kind) using this site:

Have your partner make one as well so that you can switch at the end (make sure to use terms that relate to Mendel or genetics)