Abstract
The mechanism of somatic and germinal nuclear differentiation after conjugation was investigated in Paramecium caudatum by the method of microsurgery. The results show that the stage of the determination for this differentiation is immediately after the third (last) nuclear division of the fertilization nucleus and that the differentiation seems to be closely associated with a brief localization of the nuclei near the opposite ends of the cell, with somatic nuclei (macronuclei) in the posterior region and the germinal nucleus (micronucleus) in the anterior region. The different fates of the postzygotic nuclei may depend on their different positions, which are a consequence of anteroposterior differentiation of the cytoplasm. The elimination of a prezygotic somatic nucleus suggests the possibility of a control by the old somatic nucleus over the differentiation of the new somatic nucleus.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
