2 and 3, to 6

Usage examples of factors.

As far as the great mass of human characters go, they are, in our opinion, due to so many separately inheritable factors that it is not safe to dogmatize about exactly how they will behave in heredity.

Because, presumably, in each individual there is a different set of modifying factors or else a variation in the factor.

The evolutionist has really to deal with the three factors of germ-plasm, physical surroundings and culture.

On the other hand, there are factors which, although having inherited bases, owe their expression almost wholly to outside influences.

But there must be many other factors which also affect the pituitary and in some cases probably favor its development, rather than hindering it.

In further crossing red wheat with white, he secured ratios which led him to believe that the red was produced by three independent factors, any one of which would produce red either alone or with the other two.

Baur found four factors responsible for the red color of snapdragon blossoms.

It is probable that just as the multiplicity and interrelation and minuteness of many factors have been the principal discoveries of genetics in recent years that the next few years will see a great deal of evidence following the important lead of Castle and Jennings, as to variation in factors.

Is it not a fair assumption that the difference between the apparent unit character of feeble-mindedness, and the obvious non-unit character of height, is a matter of difference in the number of factors involved, difference in the degree to which they hang together in transmission, variation in the factors, and certainly difference in the method of measurement?

Independent multiple factors in the germ-plasm, as in the case of wheat mentioned a few pages back.

It is probable that the development of a mental character is much more complicated, and therefore there is more likelihood of additional factors being involved.

That overcrowding and climate can not be the sole factors is indicated by the fact that the Negro race has been decimated, wherever it has met tuberculosis.

But disease and the other lethal factors not connected with the food-supply, through which natural selection acts, are still of great importance.

It seems probable that morality is to a considerable extent a matter of heredity, and the care of the eugenist should be to work with every force that makes for a clear understanding of the moral factors of the world, and to work against every force that tends to confuse the issues.

Pitch discrimination seems to depend on structural factors which are not susceptible of improvement by practice.