Lamarck had put forward the hypothesis that structural alterations acquired by (that is to say, superimposed upon) a parent in the course of its life are transmitted to the offspring, and that, as these structural alterations are acquired by an animal or plant in consequence of the direct action of the environment, the offspring inheriting them would as a consequence not unfrequently start with a greater fitness for those conditions than its parents started with.
The offspring of the virgin females are in most of these instances females; but among the bees and wasps parthenogenesis occurs normally and always results in the development of males, the " queen " insect laying either a fertilized or unfertilized egg at will.
The third quality is obedience; the offspring of eight centuries passed under the shadow of military autocracy.
He noticed that when he bred a tall one with a short one, sometimes he got tall offspring and sometimes a short offspring.
Now, if words and images come to me without effort, it is a pretty sure sign that they are not the offspring of my own mind, but stray waifs that I regretfully dismiss.
I had no difficulty in making it clear to her that if plants and animals didn't produce offspring after their kind, they would cease to exist, and everything in the world would soon die.
- Pollennumerous or a more robust offspring, or one of anOrchid, better able to adapt itself to the varying masses with their caudicles conditions under which it has to live.
The whole question as to the mixture of characters in offspring thus produced was - and remains - very imperfectly observed.
Educability, defects or excellences, or peculiarities of mind or body, can be handed on from parent to offspring by protoplasmic continuity in reproduction.
If the germ-cells are undifferentiated, the offspring may arise from many cells or from a single cell; the first type is (4) germinal budding, the second is (5) sporogony.
He depreciates unduly the Western civilization of the early middle ages, and exalts the civilization of the Arabs; and starting from these two premises, he concludes that modern civilization is the offspring of the Crusades, which first brought East and West together.
The tendency of the proportions in the offspring of 'PP, 2PN, INN is to give in a series of generations a regular reversion from the hybrid form PN to the two pure races, viz.
In some cases a pair of animals pro- ‘ duce ten million offspring, and in such a number a large range of congenital variation is possible.
It has been argued that the elaborate structural adaptations of the nervous system which are the corporeal correlatives of Theory complicated instincts must have been slowly built up by the transmission to offspring of acquired ex perience, that is to say, of acquired brain structure.
Offspring), and " Bel is the giver of a name," form the model for names with deities as the first element followed by MU-MU, even though the model may not be consistently followed in all cases.
Not a few cases are known in which a parasitic larva is itself pierced by the ovipositor of a " hyperparasite," and even the offspring of the latter may itself fall a victim to the attack of a " tertiary parasite."
Then he noticed when he bred tall pea plants with another tall plant, he occasionally got a short offspring, but usually tall ones.
Founder-polyp) nor its offspring by budding (polyps of the colony) have the power of becoming medusae, but only of producing medusae by budding.
When Ravenna is taken, and Vitigis carried into captivity, Jordanes almost exults in the fact that "the nobility of the Amals and the illustrious offspring of so many mighty men have surrendered to a yet more illustrious prince and a yet mightier general, whose fame shall not grow dim through all the centuries."
He could not marry out of the domain; if he took for wife a colona of another proprietor, she was restored to her original locality, and the offspring of the union were divided between the estates.
The head of the divine hierarchy of Mithras was Infinite Time - Cronus, Saturn; Heaven and Earth were his offspring, and begat Ocean, who formed with them a trinity corresponding to Jupiter, Juno, and Neptune.
Consequent disuse, and the transmission (as Lamarck would have supposed) of a more and more weakened and structurally impaired eye to the offspring in successive generations, until the eye finally disappeared.
She survived her marriage but a few months and her husband then obtained the wardship of her Dacre offspring, a son who died young, and three daughters whom the duke, with the true Howard eye for a rich inheritance, gave as brides to three of his sons.
The so-called Spectre Huntsman of the Malay Peninsula is said to be a man who scours the firmament with his dogs, vainly seeking for what he could not find on earth - a buck mouse-deer pregnant with male offspring; but he seems to be a living man; there is no statement that he ever died, nor yet that he is a spirit.
Originally a nature goddess (like Venus the garden goddess, with whom she was sometimes identified), she represented at first the hope of fruitful gardens and fields, then of abundant offspring, and lastly of prosperity to come and good fortune in general, being hence invoked on birthdays and at weddings.
- The Khmers, the ancient inhabitants of Cambodia, are conjectured to have been the offspring of a fusion between the autochthonous dwellers in the Indo-Chinese peninsula, now represented by the Kouis and other savage tribes, and an invading race from the plateaus of central Asia.
Aptitudes and want of aptitude, which are innate and constitutional, are transmitted to offspring, but not the results of experience, education and training.
He also might say, from it as His offspring, to it as the object of His outgoing love are all things.
There are also hooped or bowed canaries, feather-footed forms and top-knots, the latter having a distinct crest on the head; but the offspring of two such top-knotted canaries, instead of showing an increased development of crest, as might be expected, are apt to be bald on the crown.
In some species of Copris it is stated that the female lays only two or three eggs at a time, watching the offspring grow to maturity, and then rearing another brood.
It is within common observation that parent and offspring are alike: that the new organism resembles that from which it has come into existence: in fine, biogenesis is homogenesis.