Abstract

DNA molecules from lysates of microsporocytes at different stages of meiosis of Lilium longiflorum were examined in the electron microscope. In all of the preparations, only linear (non-circular) molecules were found. They had a mean length of between 59 μ and 75 μ, and a range of lengths which varied from 1 μ to 115 μ, to 1 μ to 210 μ. From the data obtained, there was no indication of a change in molecular form or size of DNA molecules associated with the process of meiosis.

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