Continuous exposure to bisphenol A during in vitro follicular development induces meiotic
pole after the first meiotic
division; and 4) Chromatids must separate
and mitotic nondisjunction: lessons from preimplantation genetic diagnosis.
While mosaicism arises from meiotic
or mitotic errors early in development.
The 3 parasite isolates were genetically related, but not identical, and they have been proposed to be meiotic
With very low frequency, triploid gametes can be formed by dysfunction of the first meiotic
division, resulting in tetraploid zygotes when crossed with diploid individuals.
The studies' findings also eased concerns that freezing might compromise egg quality by damaging the meiotic
1985) observed the meiotic
chromosomes of 2 species of the genus Trachyderes.
Intermediate alleles are not pathogenic, but may pose a risk to the offspring of the carrier through meiotic
expansion into the pathogenic range during vertical transmission.
The model also shows that genes and chromosomes are contained in all cells, the concept of dominance versus recessive alleles, the production of diploid mitotic products versus haploid meiotic
products, and how a zygote results from the combination of cells derived from a female and a male parent during sexual reproduction.
Radioprotective effect of melatonin assessed by measuring chromosomal damage in mitotic and meiotic
This latter cell gives rise to the primary spermatocyte, which quickly undergoes its first meiotic
division and passes through 4 prophase stages, leptotene, zygotene, pachytene, and diplotene, before undergoing meiotic
Taking into account that polyploid species generally display a great amount of meiotic
abnormalities that compromise pollen viability (SINGH, 1993), the present research aims to evaluate the meiotic
process in four intraspecific hybrids and their progenitors to investigate the meiotic
stability as an additional parameter to select the most interesting hybrid in relation to seed production to attend the commercial seed demand.
There were no significant differences as for the meiotic
Volume 2 of this reference and instructional manual set provides current and critical new protocols in the study of meiotic