Gregor Mendel

My scientific studies have afforded me great gratification; and I am convinced that it will not be long before the object of my researches will be recognized as of some importance for the understanding of the development of organic forms.

The value and utility of any experiment are determined by the fitness of the material to the purpose for which it is used, and the care with which the observations are made.

It is indeed a remarkable fact that among the numerous forms of peas, there is not one which is exactly intermediate between the two parental forms.

The results of the experiments are in perfect agreement with the assumption that the differences between the parental forms are due to the presence or absence of certain differentiating characters.

The constant characters which appear in the hybrids are those which were present in the parental forms.

The characters which are transmitted unchanged to the hybrids are those which are essential for the existence of the species.

The law of combination of different characters, which governs the formation of the hybrids, is a general one.

The constant characters of the hybrids are those which are transmitted unchanged to the offspring.

The variable characters of the hybrids are those which are not transmitted unchanged to the offspring.

The constant characters are those which are essential for the existence of the species.

The variable characters are those which are not essential for the existence of the species.

The constant characters are those which are transmitted unchanged to the offspring, even if they are present in only one of the parental forms.

The variable characters are those which are not transmitted unchanged to the offspring, even if they are present in both parental forms.

The constant characters are those which are transmitted unchanged to the offspring, even if they are present in only one of the parental forms, and even if they are not essential for the existence of the species.

The variable characters are those which are not transmitted unchanged to the offspring, even if they are present in both parental forms, and even if they are essential for the existence of the species.

The constant characters are those which are transmitted unchanged to the offspring, even if they are present in only one of the parental forms, and even if they are not essential for the existence of the species, and even if they are not visible in the hybrids.

The variable characters are those which are not transmitted unchanged to the offspring, even if they are present in both parental forms, and even if they are essential for the existence of the species, and even if they are visible in the hybrids.

The constant characters are those which are transmitted unchanged to the offspring, even if they are present in only one of the parental forms, and even if they are not essential for the existence of the species, and even if they are not visible in the hybrids, and even if they are not expressed in the hybrids.

The variable characters are those which are not transmitted unchanged to the offspring, even if they are present in both parental forms, and even if they are essential for the existence of the species, and even if they are visible in the hybrids, and even if they are expressed in the hybrids.

The constant characters are those which are transmitted unchanged to the offspring, even if they are present in only one of the parental forms, and even if they are not essential for the existence of the species, and even if they are not visible in the hybrids, and even if they are not expressed in the hybrids, and even if they are not inherited by the hybrids.