1. Gregor Mendel (1822-1884) The Father of Genetics Mendelian Genetics
2/16/2019
Gregor Mendel ( )
The Father of Genetics
This has been modified from the original ppt Oct. 2011
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2. Gregor Johann Mendel Austrian monk
Mendelian Genetics
2/16/2019
Gregor Johann Mendel
Austrian monk
Studied the _________ of traits in _______________
Developed the ______________________________________
Mendel's work was not recognized until the turn of the ___________________

3. copyright cmassengale
Mendelian Genetics
2/16/2019
Gregor Johann Mendel
Between 1856 and 1863, Mendel cultivated and tested thousands of pea plants
He found that the plants' offspring retained traits of the parents
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4. Particulate Inheritance
Mendelian Genetics
2/16/2019
Particulate Inheritance
Mendel stated that physical traits are inherited as “_______________”
Mendel did not know that the “particles” were actually ____________________________________________
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5. copyright cmassengale
Mendelian Genetics
2/16/2019
Why peas, Pisum sativum?
Can be grown in a ____________________
Produce ___________
Produce ___________ plants when allowed to ____________________ several generations
Can be ________________________________________
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6. Mendel and His Peas Mendel tested 7 traits: Flower color
Flower position
Seed color
Seed shape
Pod shape
Pod color
Plant height

7. Mendel and His Peas
Mendel crossed flowers that were true-breeding for each characteristic.
He crossed a purple (PP) flowered plant with a white (pp) flowered plant. (_______________________________)

8. Mendel and His Peas
Purple Parent (PP)
The __________ (F1) of plants all had purple flowers.
Where did the white color go??
White Parent (pp)
  (Pp)   
(Pp)
   (Pp)

9. Mendel and His Peas
Mendel took two of his first generation (F1 x F1) purple flowered plants and crossed them together.
In the second generation (F2) he had 3 purple flowered plants, and 1 white flowered plant.
Purple Parent (Pp)
Purple Parent (Pp)   
(PP)
  (Pp)
  (Pp)
  (pp)

10. Mendel and His Peas
Mendel noticed in the first generation, all of the white flowers seemed to disappear.
He called this a ____________________.
The white color faded into the background at first.
It showed up in the next generation when he pollinated the flowers.

11. Mendel and His Peas
The color (purple) that seemed to mask over the recessive color was named the ________________________________.

12. Mendel and His Peas
Mendel was responsible for figuring out that each plant carried ______ sets of instructions for each characteristic (one from the “_____” and one from the “____”
Like many scientists, his work was not accepted until after his death.

13. Let’s Review
1. If you crossed a true-breeding black rabbit with a true-breeding white rabbit, all of the offspring would be black. Which trait is dominant in rabbits: black fur or white fur?
2. Which trait is recessive?

14. Answer
Black Rabbit (BB)
The trait for black fur is _________ over the trait for white fur. The white fur trait is ______________.
White Rabbit (bb)
  (Bb)
(Bb)