Radiation and Heredity

Radiation effects on human heredity.

In experimental organisms such as fruit flies and mice, increased frequencies in germ cell mutations have been detected following exposure to ionizing radiation. In contrast, there has been no clear evidence for radiation-induced germ cell mutations in humans that lead to birth defects, chromosome aberrations, Mendelian disorders, etc. This situation exists partly because no sensitive and pract...

Marriage and Heredity

Mydriasis and heredity.

Routine ophthalmoscopy and fundoscopy of 673 individuals revealed 42 whose irides failed to dilate to a clinically useful degree within 25 to 30 min after the administration of drops of 1% mydracil. These individuals occurred with different frequency among the Aymara, Mestizo, and non-Aymara groups which made up the sample of examinees. The phenomenon was most common among the Aymara, less comm...

Heredity and Mental Diseases

Lecture, on heredity in relation to mental disease and mental deficiency by Sir Frederick Mott, and also the obituary notice of the distinguished author. The lecture is an important contribution to the problem of insanity and mental deficiency. Sir Frederick opened his lecture by asking whether the increase in the number of registered cases of insanity is due to a raising of the standard of men...

Blood Groups and Heredity

that go to make the differ eSj such a and another, as very feVyT ( . digital m genital cataract, alkaptonu i'ur of the irl ' Nation, and probably the c.. lines. stated to run upon Mendelian .g dlfficUlt The subject of human her^ ̂ is, &t a and hence investigation R?tly anothe ?aiV8 speed. Only very character has been added t n and H11. blood group factor. Von Dung'er ̂ agglutinins ^ld have conclu...