نتایج جستجو برای: zygote
تعداد نتایج: 2826 فیلتر نتایج به سال:
This paper introduces fundamental ideas of bitopological dynamical systems. Here, notions transitivity, point pairwise iterated compactness, weakly etc. are introduced. Later, it is shown that under homeomorphism, transitivity implies transitivity. Moreover, homeomorphism; compactness and found to be equivalent. we apply our results in the development process a human embryo from zygote until bi...
Background: Maternal mRNA degradation is a selective process that occurs in waves corresponding to important developmental transitions such as resumption of meiosis, fertilization and zygotic genome activation. It has been demonstrated that the number, position, and combination of 3 UTR cis-acting elements interacting with trans-acting protein factors regulate translation and mRNA stability. Ou...
Anterior-posterior polarity in the Caenorhabditis elegans zygote depends on two groups of PAR proteins, as well as on cortical flow. Recent work now demonstrates that this polarization results from a transition in a bistable reaction-diffusion system of PAR proteins that is triggered by cortical flow.
Volvox sect. Volvox is characterized by having unique morphological characteristics, such as thick cytoplasmic bridges between adult somatic cells in the spheroids and spiny zygote walls. Species of this section are found from various freshwater habitats. Recently, three species of Volvox sect. Volvox originating from rice paddies and a marsh were studied taxonomically based on molecular and mo...
Unexplained infertility is considered when with application of standard investigations, including semen analysis, post coital test, endometrial biopsy, hysterosalpingography, and laparoscopy, etiologic factors are not found. With advances in science and technology and taking advantage of various assessment procedures especially during the last two decades, the prevalence of this entity is decre...
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