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In the maturation divisions reduction does not occur, N chromosomes passing to one gamete, none to the other, and the latter perishes so that the sperms all contain N chromosomes. When fertilisation occurs the zygote therefore contains 2N chromosomes and becomes female. Here then we have no segregation of Fxf in the ova.
According to Doncaster it has been found that in some Lepidoptera the different sex-chromosomes occur in the female, not in the male as in other insects. Half the eggs, therefore, contain an X chromosome, and half a Y, while all the sperms contain an X chromosome. Doncaster has seen in Abraxas grossulariata ova with two nuclei both undergoing maturation.
Humanity has moved through stages in its collective development which are reminiscent of the periods of infancy, childhood, and adolescence in the maturation of its individual members. We are now experiencing the beginnings of our collective maturity, endowed with new capacities and opportunities of which we as yet have only the dimmest awareness.
I've run across something peculiar." "There are twelve bays to this station," Jordan said. "Under our present setup two are used for breeding and the other ten for maturation. We rotate the youngsters around the bay a different bay each year until they're age eleven.
This general truth applies to all animals, and extends to the seed of plants in the act of germination, to flower-buds when developing, and fruits during their maturation. In the animal body, heat is produced only in those parts to which arterial blood, and with it the oxygen absorbed in respiration, is conveyed.
The acids react on the cambium, which flows into the fruit, and, aided by the increased temperature, convert it into saccharine matter; at the same time they disappear, being saturated with gelatine, when maturation is complete. London Medical and Surgical Journal. We may here observe that in a recent paper, by Mr.
No eruptions on the skin have followed the decline of the feverish symptoms in any instance that has come under my inspection, one only excepted, and in this case a very few appeared on the arms: they were very minute, of a vivid red colour, and soon died away without advancing to maturation; so that I cannot determine whether they had any connection with the preceding symptoms.
The danger of the disease is in childhood the nervous disorder at the outset, and then the exhaustion produced by the so-called maturation of the pocks when the thin watery fluid changes to the thicker matter, and depresses the patient in the same way as he would be depressed by an enormous abscess.
The adrishtas of some souls come to maturity in the same state of existence in which the deeds were performed; others become mature in a subsequent state of existence only; and others again do not become mature before a new Kalpa has begun. It is owing to this dependence on the maturation of the adrishtas that the origination of the world does not take place at all times.
The ganglionic nervous excitement coincident with the maturation of the ovule and the congestion of the uterus, is easily communicated to the vaso-motor nerves of the latter organ.
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