Quotes about Cross Breeding

Gustave Le Bon

I admit the general inferiority of black-white offspring. Defective half-breeds are too prevalent and obtruding to permit denying the apparently predetermined result of such crosses. But I emphatically deny that the result is inherent in the simple fact of cross-breeding. There are not a few very striking exceptions among my own acquaintances. Absolutely the best mulatto family I have ever known traces its ancestry back on both the maternal and paternal side to high-grade white grandfathers and pure-type negro grandmothers. The reason for the frequently inferior product of such crosses is that the better elements of both races under ordinary conditions of easy mating with their own type feel an instinctive repugnance to intermarriage. Under these usual circumstances a white man who stoops to mating with a colored woman, or a colored woman who will accept a white man, are already of quite inferior type. One would not expect superior offspring from such parents, if it concerned horses or dogs.

At the time, many scientists and intellectuals thought erroneously—see related quotations—that hybrids would be inferior humans. What makes this quotation memorable is that although he acknowledged that empirically, mixed race people (human hybrids) were inferior, of offered an explanation that did not violate sound genetic science as most others did. He concluded that sociologically whites and black who would intermarry or interbreed would generally not come from the top echelons of either race. Therefore the lower half of each race would more likely produce offspring and provide them with an environment that was not optimum so genetics and nurture worked against the mulatto. At the time that may well have been so, and perhaps until recently it was so forth the majority of crossbreeds of many societies.

Gregor Mendel

When two plants, constantly different in one or several traits, are crossed, the traits they have in common are transmitted unchanged to the hybrids and their progeny, as numerous experiments have proven; a pair of differing traits, on the other hand, are united in the hybrid to form a new trait, which usually is subject to changes in the hybrids' progeny.

Craig Venter

When you do cross-breeding of plants, you're doing this blind experiment where you're just mixing DNA of different types of cells and just seeing what comes out of it.

Wilford Brimley

I raise quarter horses. Mine are mostly thoroughbred cross horses, a little bigger horses than some people like. I sell them or use them on the ranch. A lot of them go to the rodeo arena and some of them go to racetracks.

Freeman Dyson

Every orchid or rose or lizard or snake is the work of a dedicated and skilled breeder. There are thousands of people, amateurs and professionals, who devote their lives to this business. Now imagine what will happen when the tools of genetic engineering become accessible to these people.

Neil deGrasse Tyson

Pretty much every plant and animal alive today is the result of eons of natural cross-breeding.

Theognis of Megara

Ram, ass, and horse, my Kyrnos, we look over
With care, and seek good stock for good to cover;
And yet the best men make no argument,
But wed, for money, runts of poor descent.
So too a woman will demean her state
And spurn the better for the richer mate.
Money's the cry. Good stock to bad is wed
And bad to good, till all the world's cross-bred.
No wonder if the country's breed declines-
Mixed metal, Kyrnos, that but dimly shines.

Harvey Ernest Jordan

The truth is that the hybrid finds himself alive and human, with all that this signifies in terms of capacity for soul development. The pure-bred has no better initial equipment. In the matter of human fundamentals they come to differ only as a different nurture plays upon a very similar human nature. There surely are no real data for the support of Le Bon’s notion that contrary heredities sap the vitality of hybrids and leave them barren of soul.

There were a substantial proportion of Americans who believed that mulattoes were per se inferior.

Louis Agassiz

In Brazil a decadence that results from cross-breeding which goes on in this country to a greater extent than elsewhere. This cross-breeding is fatal to the best qualities whether of the white man, the black, or the Indian, and produces an indescribable type whose physical and mental energy suffers.

Agassiz, a prominent Harvard professor was considered the leading biological and zoological scientist in America, Yet he was totally wrong about most of his conclusions regarding regarding species and races from horses to humans. He was one of the few scientists who rejected Darwin’s approach to evolution and that that Asians, Blacks, Whites and Indians were separate species and other erroneous things as this quote about mixed race humans.

Cross Breeding Quotes