Inheritance in the Asexual Reproduction of Centropyxis Aculeata
Inheritance in the Asexual Reproduction of Centropyxis Aculeata
Francis Metcalf Root
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Because of cold weather, the fission rate was very low, and when about fifty indi- viduals had been produced in each group the experiment was ended on February 3, 1916. The numbers concerned in this experiment are not large, but the difference between the means of the two final groups ( 1. 46 spines ) is go great in proportion to its probable error ( . 035 ) that there can be no doubt that in this case selection has isolated, within a single clone, two strains with decidedly different average s...pine num. Bers . In Figure 6 are shoy/n a fev/ characteristic members of the two groups, from camera outlines. In this experiment there is one possibility of error. When one is selecting individuals instead of masses of in- dividuals, a single line instead of a number of linos, an excellent opportunity is offered for the multiplication of any mutation that may occur. Recognizing this fact, and being now quite convinced in m. Y own mind that selection within the clone was having an effect, I turned to mass selection once more.
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