Gregor Mendel

The father of genetics.

Gregor Mendel.

Mendel had started out as a farming child and his family had been poor. He had been through a lot in his life before he got into genetics, such as being a priest for a time and then moved on to study heredity, and led him to become the father of genetics.

Early life; Successes and Struggles.


  • He was considered a very smart child.
  • He had been accepted into the University of Olomouc


  • His family were poor farmers
  • He had to tutor other kids in order to pay for his boarding school

Experimental Design.

  • He studied heredity with using pea plants because of their “purity and and more easily observable characteristics”
  • He used this scientific question, “How many different forms would result from the random fertilization of two different kinds of pea plants?” And he was able to get information from the experiment.

Data from Mendel.

  • He had crossed a pure yellow plant with a pure green plant and got a majority of yellow plants.
  • He found that the ratio for the plants coming out yellow to green was 3:1
  • "When he crossed plants that always produced yellow peas with plants that always had green peas, all the new plants had yellow seeds.”
What this data means:
  • The data that Mendel got means that sometimes, just because your parents have one trait, doesn’t mean that you will always have the same traits as them, and that genes can be passed through parents to you though they didn’t have the same trait.

Scientist's Reactions to Mendel's work.

They didn’t understand why he was doing it at first or why he was using pea plants when, well, people aren’t pea plants. They didn't think anything of his research until a little while after he died in 1884 at the age of 61.

Foundation of genetics.

After Mendel died, three scientists realized what Mendel was on to and built their research off of his and even got the same results he did. That is why he is now known as the “Father of Genetics”

Vocabulary that Mendel used to describe parts of his research.


Definition: gene that will overpower another gene

Examples: eye color, hair color, facial features, vision type (farsighted, nearsighted, etc.)


Definition: gene that gets covered-up by a dominant gene

Examples: eye color, hair color, facial features, vision type (farsighted, nearsighted, etc.)


Definition: gene that is neither dominant nor recessive (both would show up)

Examples: hair type (wavy, etc.), blood type, blood cell shape in sickle cell disease