See Also: testcross(encyclopedia)

in-being (iou) and testcross (sh)


in-being (iou)



in-being noun. L16.
[from IN adverb + BEING noun.]
Theology. Each of the constituents of the Trinity. L16-M17.
A. Golding In the same most single essence are three Persons or In-beings.
The fact of being within; existence in something else. E17.
T. Warren 'Tis such an union and in-being in Christ. J. Neill Believing..gives them a real subsistence and in-being in the Soul.
Inward or essential Nature. M17.
J. Ruskin Men get to know..their inbeingto know themselves..what is in them.

testcross (sh)




Experiment in which an organism with unknown genetic makeup is mated with an organism whose entire genetic makeup for a trait is known, to determine which genes are carried by the former.

In a breed of dog, for example, in which the gene for black coat colour is dominant over the gene for red coat colour (see dominance), a dog with a black coat may be pure (with two genes for black coat colour) or hybrid (with one gene for black and one for red). When its mating with a red-coated dog (which always has two genes for red coat colour only) produces only black offspring, the black-coated parent must be pure, whereas if some of the young are red, the parent must be hybrid.