Monday 19 March 2012

Dominence , Co-Dominence, Incomplete Domincence

Results for Pea Plants:
- If you have a pure bred purple plant and you mix it with a white pure bred you get all purple offspring.
- When you mix a half bred
- when you put a purebred purple with a half-bred purple you get --> you get 6 purple and 2 whites.
- if you mix whites you get all white
So thus the purple pea plants are dominant and the white are recessive.

Reflection: I know that the purple plants are dominent becuase when you cross the white pea plants with white the offspring are all white. Also when you cross a purpred purple peaplant with a white you get purple pea plant .  

Results for Snapdragons:
- If you mix red and red you get all red
- if you mix red and pink you get 4 pink and 4 red
- if you mix red and white you get all pink.
- if you mix pink and pink you get 4 pink, 2 red, and 2 white.
- if you mix pink and white you get 4 pink and 4 white. .
- if you mix white and whites you get all white.
thus the snapdragons are incomplete dominence

Reflection:
if you cross red with white you get pink. If you cross white with white you get white. If you cross red and red you get all red. This is a definete example of incomplete dominence. Because niether are fighting to be shown they are both neutral.

Results for Lentils:

- If you mix small seeds with big seeds you get all mixed seeds
- if you mix small seeds with small seeds you get all small seeds
- if you mix big seeds with big seeds you get all big seeds.
- if you mix mixed seeds with mixed seeds you get 4 mixed seeds, 2 small seeds, and 2 big seeds.
thus the lentils are co-dominence.

Reflection: When combining the lentils unless you are crossing two of the same you never get one dominent lentil plant shown. --> this is an example of co-dominence. You can also so this when you mix mixed seed with mixed seeds and you get 4 mixed seeds, 2 small seeds, and 2 big seeds. You can think of this as both types of lentils are to stubborn to give in so thus they are dominent together/ co-dominence.

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