Pure lines of a plant with a high stem and whole leaves are crossed with a plant that has a short stem and cut leaves.

| April 5, 2021 | education

Pure lines of a plant with a high stem and whole leaves are crossed with a plant that has a short stem and cut leaves. In the first generation, all individuals have a tall stem and whole leaves. What will be the splitting in the second generation if the genes are independent?

The gene for the high stem – A, short – a; whole leaves – B, cut – b.

R: AABB x aabb;

G: AB x ab;

F1: AaBb – 100% long stem and whole leaves.

 

Р: АаВв х АаВв;

G: АВ, Ав, аВ, ав х АВ, Ав, аВ, ав;

F2:    АВ     Ав     аВ      ав

АВ  ААВВ  ААВв  АаВВ  АаВв

Д. Ц.  Д. Ц.  Д. Ц.  Д. Ц.

Ав  ААВв  ААвв   АаВв  Аавв

Д. Ц.  Д. Р.  Д. Ц.   Д. Р.

аВ  АаВВ  АаВв   ааВВ  ааВв

Д. Ц.  Д. Ц.  К. Ц.   К. Ц.

ав  АаВв   Аавв   ааВв  аавв

Д. Ц.  Д. Р.  К. Ц.   К. Р.

Designations: Д – long stem, K – short; Ц – whole leaves, Р – cut.



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