The condition of albinism thus assumed as a seasonal variation is never complete, for the eyes at least retain their pigmented state.
Albinism appears, in the processes of heredity, to be sometimes indissolubly correlated with certain peculiar traits.
Before we can inquire into the cause and meaning of albinism it will be necessary first to consider the nature Of pigmentation.
In complete human albinoes, albinism is correlated, in addition to nystagmus, with a peculiar roughness of the skin, making it harsh to the touch.
The recessive nature of albinism and its distribution in Mendelian fashion is almost certainly as true for man as for lower forms.
Gunn, of Edinburgh Dniversity, who has recently been investigating the subject of albinismin man, there is reason to believe that a condition of piebald albinism occurs also in Europeans (Scotsmen).
Familiar instances of this partial albinism is seen in the domestic breed of Himalayan rabbits.
In my observations, what has struck me as a most curious fact, and what I have found to be generally ignored, is that this wide-spread albinism and general weakness of our acclimated house-sparrow are not found among its progenitors.
This albinismand weakness, existing simultaneously to such an extent in our young house-sparrows, are evidently the result of their acclimation.
Not only does albinism assert itself in the production of white forms, but there are many seasonal and climatic forms.
In very many cases the change which is transmitted and preserved by adapted transmission is constitutional or inborn, as in the case of albinism mentioned before.
Albinism is congenital, and the hair and eyes are affected as well as the skin.
Following Trelat and Guinard, we may divide albinisminto two classes,--general and partial.
It differs from albinism in being an acquired deficiency of pigment, not universal and not affecting the eye.
Prichard, quoted by Sedgwick, speaks of a case of atavic transmission of albinism through the male line of the negro race.
Albinism is found in the lower animals, and is exemplified ordinarily by rats, mice, crows, robins, etc.
Albinism is characterized by the absolute or relative absence of pigment of the skin, due to an arrest, insufficiency, or retardation of this pigment.
In the Natural History Museum in London there are stuffed examples of albinism and melanism in the lower animals.
Albinism he finds to be very rare in British species, the only locality known to him being the Outer Hebrides.
This reminds us of Wallace's remark upon the tendency toalbinism in islands.
This variability in degree of albinism is familiar to all students of albinism in man.
An albino (aa) mated with a normal individual will have normal offspring (Aa), but they will have the capacity for transmitting albinism to their descendants.
If for albinism we substitute certain forms of insanity, hereditary feeble-mindedness (Fig.
Pearson has steadfastly refused to admit that albinism in man is a Mendelizing character, because it may assume various forms ranging from colorless to quite heavily pigmented conditions (blondes).
At every point there appears to be agreement in method of inheritance between albinism and feeble-mindedness.
An example of the former is found in the hooded pattern of rats,[4] of the latter in albinismand other Mendelizing characters which assume multiple allelomorphic conditions.
Under the mask of albinism is all the while occurring that segregation of the different colour factors which would result in all the varieties of coloured forms, if only the essential factor for colour development were present.
Bert made the mistake of confounding albinism with the phenomenon of etiolation in plants; in fact, he gives the name "etiolation" to the albinism noticed in his axolotls.
Mendelian factor, being dominant toalbinism and recessive to the black-brown coloration.
However, in it the pattern is so unusual as to suggest that it is an instance of partial albinism rather than an outcropping of a racial tendency, or a pattern of coloration induced by climatic factors.
Kyphosis is to be expected in all kinds of softshells as are other abnormalities, such as albinism (reported for Lissemys by D'Abreu, 1928, and partial albinism noted in T.
A case of partial albinismin Trionyx cartilagineus (Bodd.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "albinism" in a variety of sentences. We hope that you will now be able to make sentences using this word. Other words: albinism; albino; blindness; fairness; lightness; milkiness; paleness; silver; white
