Please correct this sentences

1. He crossbreeded a purebred tall plant with a short plant. (to write "pea" is better because it's a rare 100% purebred plant)

2. Similarly, he crossbreeded every two different characteristic plants to get  about 7 differnt traits' plants.-parent generatioin.

3. Futhermore, he let all made those seven types of the first  parent generation plants self-pollinate.

Through this experiment, he was the first one to realize that hereditary information  the genetic mechanism: for two different forms of a trait the recessive and dominant traits can coexist in a single individual, with one form masking the expression of the other form.while dominant trait is always appeared.

His 1865 paper ‘Experiments on Plant Hybridization’ is today regarded as the base of genetic experimentation.

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1. He crossed a purebred tall plant with a short plant.

2. Similarly, he crossed the two different characteristic plants about until he had plants with seven different traits.

3. Futhermore, he let all seven types of the first (I believe you mean the second) generation plants self-pollinate.

Through this experiment, he was the first to realize that hereditary information for two different forms of a trait can coexist within a single individual, with one form masking the expression of the other form.

His 1865 paper ‘Experiments on Plant Hybridization’ is today regarded as the base basis of genetic experimentation.

1. He crossed a purebred tall plant with a short plant.

2. Similarly, he crossed two different characteristic plants w about 7 traits.

3. Futhermore, he let all seven types of the first generation plant self-pollinate.

Through this experiment, he was the first to realize that hereditary information for two different forms of a trait can coexist in a single individual, with one form masking the expression of the other form.

His 1865 paper ‘Experiments on Plant Hybridization’ is today regarded as the base of genetic experimentation.

1. He crossed a purebred tall plant with a short plant.

2. Similarly, he crossed two different characteristic plants w about 7 traits.

3. Futhermore, he let all seven types of the first generation plant self-pollinate.

Through this experiment, he was the first to realize that hereditary information for two different forms of a trait can coexist in a single individual, with one form masking the expression of the other form.

His 1865 paper ‘Experiments on Plant Hybridization’ is today regarded as the base of genetic experimentation.