Each medusa has either several testes or several ovaries in which meiosis occurs to produce sperm or egg cells. Interestingly, the gamete-producing cells do not arise within the gonad itself, but migrate into it from the tissues in the gonozooid. This separate origin of gonad and gametes ...
Eukaryotic cells display a wide variety of different cellmorphologies. Possible shapes include spheroid, ovoid, cuboidal, cylindrical, flat, lenticular, fusiform, discoidal, crescent, ring stellate, and polygonal (Figure 2). Some eukaryotic cells are irregular in shape, and some are capable of changi...
This diversity has originated from the spread of a sex-limited meiosis suppressor through species that originally reproduced by cyclic parthenogenesis. The confused state of cladoceran taxonomy is partially a consequence of the presence of such obligately asexual groups, but also results from the ...
Learn what anaphase is in mitosis and meiosis. Understand what happens during anaphase and how this is divided into anaphase 1 and anaphase 2 in...
spartinae YMxiao genome were homogenized through DNA homologous recombination during meiosis process. Table 2 The profile of the S. spartinae YMxiao genome Full size table The genes associated with carbon source utilization in S. spartinae YMxiao...
On the other hand, KEGG pathway revealed the upregulation of the following pathways: Cell cycle, cellular senescence, p53 signaling, oocyte meiosis pathway (supplementary Fig. 7a). Fig. 7 Venn diagram of number of DEGs common in IPF and PCPF Full size image Functional enrichment of commonly ...
using an evaporimeter. Yamada and Tamura (2012a,2012b) noted that there was a phenomenon known as hidromeiosis, in which sweat secretion is inhibited by skin moisture during natural sweating. This phenomenon did not occur in the ventilated capsules because of the constant airflow circulating ...
Phylum Deuteromycota are called incomplete fungi because they reproduce only by releasing spores. The other groups of fungi reproduce both by spores and by cells joining together through meiosis. A well-known fungus from this phylum isPenicillium, used to make the antibiotic drug penicillin. ...
leading to a dikaryotic stage where two haploid nuclei coexist in a single cell. Duringkaryogamy(“nuclear marriage”), the haploid nuclei fuse to form a diploid zygote nucleus. Finally, meiosis takes place in the gametangia (singular, gametangium) organs, in which gametes of different mating...
sometimesParameciumexhibits this method. Some protists such as the true slime molds exhibit multiple fission and simultaneously divide into many daughter cells. Others produce tiny buds that go on to divide and grow to the size of the parental protist. Sexual reproduction, involving meiosis and fert...