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Polyploidy occurs in some tissues of animals that are otherwise diploid, such as human muscle tissues. [45] This is known as endopolyploidy. Species whose cells do not have nuclei, that is, prokaryotes, may be polyploid, as seen in the large bacterium Epulopiscium fishelsoni. [46] Hence ploidy is defined with respect to a cell.
It is possible on rare occasions for ploidy to increase in the germline, which can result in polyploid offspring and ultimately polyploid species. This is an important evolutionary mechanism in both plants and animals and is known as a primary driver of speciation . [ 8 ]
The division of human rights into three generations was initially proposed in 1979 by the Czech jurist Karel Vasak at the International Institute of Human Rights in Strasbourg. He used the term at least as early as November 1977. [1] Vasak's theories have primarily taken root in European law.
According to Professor Agni Vlavianos Arvanitis, [11] [12] [13] biopolitics is a conceptual and operative framework for societal development, promoting bios (Greek for "life") as the central theme in every human endeavor, be it policy, education, art, government, science or technology. This concept uses bios as a term referring to all forms of ...
In these polyploid unisexual females, an extra premeiotic endomitotic replication of the genome, doubles the number of chromosomes. [46] As a result, the mature eggs that are produced subsequent to the two meiotic divisions have the same ploidy as the somatic cells of the adult female salamander.
In Western thought, sanctity of life is usually applied solely to the human species (anthropocentrism, sometimes called dominionism), in marked contrast to many schools of Eastern philosophy, which often hold that all animal life is sacred―in some cases to such a degree that, for example, practitioners of Jainism carry brushes with which to ...
Group rights, also known as collective rights, are rights held by a group as a whole rather than individually by its members. [2] In contrast, individual rights are rights held by individual people ; even if they are group-differentiated, which most rights are, they remain individual rights if the right-holders are the individuals themselves.
Thus, paleopolyploidy is identified as a "peak" on the duplicate number vs. Ks graph (shown on the right). However, using Ks plots to identify and document ancient polyploid events can be problematic, as the method fails to identify genome duplications that were followed by massive gene elimination and genome refinement.