Amoebae
نویسندگان
چکیده
منابع مشابه
The social amoebae.
Noted biologist and author John Tyler Bonner has experimented with cellular slime molds for more than sixty years, and he has done more than anyone else to raise these peculiar collections of amoebae from a minor biological curiosity to a major model organism--one that is widely studied for clues to the development and evolution of all living things. Now, five decades after he published his fir...
متن کاملAmoebae anticipate periodic events.
When plasmodia of the true slime mold Physarum were exposed to unfavorable conditions presented as three consecutive pulses at constant intervals, they reduced their locomotive speed in response to each episode. When the plasmodia were subsequently subjected to favorable conditions, they spontaneously reduced their locomotive speed at the time when the next unfavorable episode would have occurr...
متن کاملGenome Analysis of Social Amoebae
Genomics is now an indispensible part of the biological sciences. Today a species description without genome information is incomplete. This chapter describes the current knowledge on the genome of the model species Dictyostelium discoideum. A comparison with other social amoebae genomes covering the whole breadth of this branch of evolution carves out driving forces of speciation and the commo...
متن کاملThe Golgi Apparatus in Amoebae
The appearance of enzymic activity during the development of the Golgi apparatus was studied by cytochemical staining of renucleated amoebae. In cells enucleated for 4 days, there was a great decline in size and number of Golgi bodies, or dictyosomes. Subsequent renucleation by nuclear transplantation resulted in a regeneration of Golgi bodies. Samples of amoebae were fixed and incubated for cy...
متن کاملNuclear Transplantation in Amoebae . II
1. A description is given of a method for replacing the original nucleus of an amoeba by a nucleus from another amoeba. This method has been used to study transfers of nuclei within a species (homotransfers) and between species (heterotransfers). The species used were A. proteus and A. discoides. 2. Removal of the nucleus from an amoeba inactivates the animal, so that movement is sporadic and u...
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ژورنال
عنوان ژورنال: The Iowa Review
سال: 2016
ISSN: 0021-065X,2330-0361
DOI: 10.17077/0021-065x.7728