Summary: Genetics Chapter 2 Lecture Notes
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2 Mendelian Inheritance
This is a preview. There are 4 more flashcards available for chapter 2
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What were the three theories of inheritance before Medelian genetics?
1) The theory of pangenesis
2) The theory of preformationism
3) The theory of blending -
Hippocrates introduced the theory of pangenesis which states that what is formed by the whole body, and collected by the reproductive organs?
"Seeds" -
According to the theory or Preformationism what unfolds and grows into adult proportions with proper nourishment?
An Homunculus -
What do spermists believe about preformationism?
The teeny tiny human lives inside the man and has to be transferred to the woman's body to grow. -
What does the theory of blending state?
The traits of the offspring are a perfect blend of the two parents traits. -
Gregor Mendel is known as what?
The Father of Genetics -
In what year were the papers Gregor Mendel published about his pea plants discovered?
1900 -
Why are model organisms required for the study of Genetics?
We cannot study on humans. -
What are the most commonly used model organisms?
E. COli
Yeast (Saccharomyces...)
Fruit Fly (Dorsophila..)
Nematode worm
Zebra fish
Mice
Plants (Arabidopsis...) -
What is a true breeder?
An organism that is homozygous for a particular trait; true breeders are always used in the P generation.
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