If X chromosome loss occurs during oogenesis, then some ova are expected to be nullo-X, which would result in a patroclinous non-Unc male. |
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The ovaries perform both an exocrine function by producing ova and an endocrine function by producing estrogen and progesterone. |
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De Graaf, working without the aid of a microscope, made the error of thinking that the fluid-filled follicles were the ova themselves. |
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The ovary consists of a cortical zone composed of a specialized stroma, which contains follicles with ova. |
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The ova penetrate the intestinal wall and pass through the portal vein to the liver, lung, and other tissues. |
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He has informed us that there is a process, and not a rare one, of wastage or discharge of flawed fertilized ova. |
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As part of the process of IVF, ova are fertilised outside the womb, producing embryos. |
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There are a few exceptions to this pattern, most famously in seahorses where females have an ovipositor which places unfertilized ova into the male's pouch for insemination. |
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Human infection follows accidental ingestion of ova passed in dog faeces. |
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As isogamy is approached, sperm become less abundant, ova become relatively less rare, and competition between males for fertilization success is predicted to weaken. |
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A total of 642 fluid ounces were put to hatch at the facility and the resulting eye ova will be stocked out at appropriate locations in the river in due course. |
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An estimate of the daily amount of yolk deposited on developing ova and the sequence of laying are important when evaluating the total cost of egg production. |
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Other crosses are embellished with white ova on an olive green background, which appear in groups of four on the four branches of the crosses. |
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The number of ova shed by the females during the heat period is normally about twice the number born as fully developed young ones. |
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Hence the genetic system of the fertilized ova normally deviates to a large extent from that of the mother. |
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This lower hormone production causes a gradual decrease in the number of ova that are released and the menstruation periods associated with them. |
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Consequently, in particular genetic modifications of spermatozoa or ova for fertilisation are not allowed. |
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The first could produce ova but appeared to be infertile, while the second was carrying a foetus. |
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Abnormalities in the ova can result if the fetus is exposed to certain chemicals. |
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Fish are taken from the river in places where it is badly silted and basically what happens is that they are stripped and hatched to the ova stage. |
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Also examined is the use of donated ova from aborted fetuses and cadavers. |
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In order to preclude the exploitation of women for the extraction of their eggs, it would be necessary for each State to enact laws allowing the donation of human ova, but prohibiting their sale. |
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Therefore exemptions from the exit ban should be applicable to them provided that the donor animals do not show any clinical signs of bluetongue on the day of collection of the embryos and ova. |
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On the summer solstice day vapour condenses into water, which results in rains that would bring out the related heat in the matter, which in turn enables germination of seeds, stimulation of ova. |
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Only 44 cases were asymptomatic, namely the incidentally found ova in bilateral tubal ligation and prolapsed fibromyomas. |
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Pseudopregnancy is the result of ovulation and the release of ova. |
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Coleochaete and embryophytes retain their zygotes on the maternal gametophyte, whereas Chaetosphaeridium expels its ova before fertilization. |
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The number and appearance of ova were normal, as was the rate of atresia. |
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Seventy percent of twins are fraternal and result from fertilization of two separate ova by two different sperm. |
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Morphological information did not extend to the micropyle, ridge pattern or filaments on the ova or eggs. |
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The Fallopian Tubes, or oviducts, convey the ova from the ovaries to the cavity of the uterus. |
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As regards specifically the ova donation, particular health and sanitary problems may arise, as well as the possible exploitation of the donors, especially the more vulnerable ones. |
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Only capacitated cells can undergo acrosomal reaction, a vital step that aids the cell to penetrate the ova to achieve fertilization. |
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Spermatozoa and ova are released freely into the water during mating season, and fertilized ova sink to the bottom. |
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Secondary gymnovarian ovaries shed ova into the coelom from which they go directly into the oviduct. |
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Two gonads sit next to the coelom, a small cavity that surrounds the heart, into which they shed ova or sperm. |
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Parthenogenesis occurs when an egg or ovum fuses with a cell called a sister polar body, a byproduct of ova production, rather than with male sperm, to promote cell division. |
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In those animals in which the system of fosterage and protection has not been developed a great number of fertilized ova are produced, only a few of which come to maturity. |
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