STUDIES ON THE MECHANISM OF ABNORMAL TRANSMISSION RATIOS AT THE T-LOCUS IN THE HOUSE MOUSE

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Abstract
House mouse mature sperms were taken from the vasa defrentia of males, T/t'', T/+ +/+, and suspended in Tyrode solution at room temperature (pH 7.0-7.2) in order to count the number of living sperms under the ordinary light microscope. In each test more than 300 sperms were observed and nonmotile ones were considered as dead sperm. The t-sperm has a higher relative probability of effecting fertilization after a long interval than a shortened one between mating and fertilization as compared with that of T-sperm. It was assumed that such difference would depend on different viability between these 2 kinds of sperm in female genital organs.