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Superfecundation
Superfecundation is the fertilization of two or more ova from the same cycle by sperm from separate acts of sexual intercourse, which can lead to twin babies from two separate biological fathers. The term superfecundation is derived from fecund, meaning the ability to produce offspring. Homopaternal superfecundation is fertilization of two separate ova from the same father, leading to fraternal twins, while heteropaternal superfecundation is a form of atypical twinning where, genetically, the twins are half siblings – sharing the same mother, but with different fathers. Conception Sperm cells can live inside a female's body for up to five days, and once ovulation occurs, the egg remains viable for 12–48 hours before it begins to disintegrate. Superfecundation most commonly happens within hours or days of the first instance of fertilization with ova released during the same cycle. Ovulation is normally suspended during pregnancy to prevent further ova becoming fertilized ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Twin
Twins are two offspring produced by the same pregnancy.MedicineNet > Definition of TwinLast Editorial Review: 19 June 2000 Twins can be either ''monozygotic'' ('identical'), meaning that they develop from one zygote, which splits and forms two embryos, or ''dizygotic'' ('non-identical' or 'fraternal'), meaning that each twin develops from a separate egg and each egg is fertilized by its own sperm cell. Since identical twins develop from one zygote, they will share the same sex, while fraternal twins may or may not. In rare cases twins can have the same mother and different fathers ( heteropaternal superfecundation). In contrast, a fetus that develops alone in the womb (the much more common case, in humans) is called a ''singleton'', and the general term for one offspring of a multiple birth is a ''multiple''. Unrelated look-alikes whose resemblance parallels that of twins are referred to as doppelgängers. Statistics The human twin birth rate in the United States rose 76% f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dizygotic Twin
Twins are two offspring produced by the same pregnancy.MedicineNet > Definition of TwinLast Editorial Review: 19 June 2000 Twins can be either ''monozygotic'' ('identical'), meaning that they develop from one zygote, which splits and forms two embryos, or ''dizygotic'' ('non-identical' or 'fraternal'), meaning that each twin develops from a separate egg and each egg is fertilized by its own sperm cell. Since identical twins develop from one zygote, they will share the same sex, while fraternal twins may or may not. In rare cases twins can have the same mother and different fathers ( heteropaternal superfecundation). In contrast, a fetus that develops alone in the womb (the much more common case, in humans) is called a ''singleton'', and the general term for one offspring of a multiple birth is a ''multiple''. Unrelated look-alikes whose resemblance parallels that of twins are referred to as doppelgängers. Statistics The human twin birth rate in the United States rose 76% fr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ovum
The egg cell, or ovum (plural ova), is the female reproductive cell, or gamete, in most anisogamous organisms (organisms that reproduce sexually with a larger, female gamete and a smaller, male one). The term is used when the female gamete is not capable of movement (non- motile). If the male gamete ( sperm) is capable of movement, the type of sexual reproduction is also classified as oogamous. A nonmotile female gamete formed in the oogonium of some algae, fungi, oomycetes, or bryophytes is an oosphere. When fertilized the oosphere becomes the oospore. When egg and sperm fuse during fertilisation, a diploid cell (the zygote) is formed, which rapidly grows into a new organism. History While the non-mammalian animal egg was obvious, the doctrine ''ex ovo omne vivum'' ("every living nimal comes froman egg"), associated with William Harvey (1578–1657), was a rejection of spontaneous generation and preformationism as well as a bold assumption that mammals also reprodu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcmene
In Greek mythology, Alcmene () or Alcmena (; Ancient Greek: Ἀλκμήνη or Doric Greek: Ἀλκμάνα, Latin: Alcumena means "strong in wrath") was the wife of Amphitryon by whom she bore two children, Iphicles and Laonome. She is best known as the mother of Heracles, whose father was the god Zeus. Alcmene was also referred to as Electryone (Ἠλεκτρυώνη), a patronymic name as a daughter of Electryon. Mythology Background According to the '' Bibliotheca'', Alcmene was born to Electryon, the son of Perseus and Andromeda, and king of Tiryns and Mycenae or Medea in Argolis. Her mother was Anaxo, daughter of Alcaeus and Astydamia. Apollodorus2.4.5/ref> Other accounts say her mother was Lysidice, the daughter of Pelops and Hippodameia,Plutarch, ''Lives'' Theseu7.1/ref> or Eurydice, the daughter of Pelops. According to Pausanias, the poet Asius made Alcmene the daughter of Amphiaraus and Eriphyle. Hesiod describes Alcmene as the tallest, most beautiful woman ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mineiros
Mineiros, population 68,154, is a municipality in the southwest of the state of Goiás, Brazil. Mineiros is the westernmost city in Goiás and a great producer of cattle, soybeans, and corn. Mineiros is located 430 km from the state capital, Goiânia, and is connected to the large town of Jataí by BR 364. Highway connections from Goiânia are made by BR-060 / Abadia de Goiás / Guapó / Indiara / Acreúna / Rio Verde / Jataí / GO-050 / BR-364. SeSepin Geography It is one of the largest municipalities in the state as well as one of the oldest. It is part of the IBGE statistical microregion of Sudoeste de Goiás. Origin of the name The name "Mineiros" comes from the first explorers who were from Minas Gerais. They settled in the region around 1873, building huts, ranch houses, churches, and chapels for saints. One of these settlers, who came to be known as "João Mineiro", because of his origin in Minas Gerais, was supposedly the first European to settle on the ban ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Jersey
New Jersey is a state in the Mid-Atlantic and Northeastern regions of the United States. It is bordered on the north and east by the state of New York; on the east, southeast, and south by the Atlantic Ocean; on the west by the Delaware River and Pennsylvania; and on the southwest by Delaware Bay and the state of Delaware. At , New Jersey is the fifth-smallest state in land area; but with close to 9.3 million residents, it ranks 11th in population and first in population density. The state capital is Trenton, and the most populous city is Newark. With the exception of Warren County, all of the state's 21 counties lie within the combined statistical areas of New York City or Philadelphia. New Jersey was first inhabited by Native Americans for at least 2,800 years, with the Lenape being the dominant group when Europeans arrived in the early 17th century. Dutch and Swedish colonists founded the first European settlements in the state. The British later seized contro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monochorionic
Monochorionic twins are monozygotic (identical) twins that share the same placenta. If the placenta is shared by more than two twins (see multiple birth), these are monochorionic multiples. Monochorionic twins occur in 0.3% of all pregnancies. Seventy-five percent of monozygotic twin pregnancies are monochorionic; the remaining 25% are ''dichorionic diamniotic''. If the placenta divides, this takes place before the third day after fertilization. Amniocity and zygosity Monochorionic twins generally have two amniotic sacs (called Monochorionic-Diamniotic "MoDi"), but sometimes, in the case of monoamniotic twins (Monochorionic-Monoamniotic "MoMo"), they also share the same amniotic sac. Monoamniotic twins occur when the split takes place after the ninth day after fertilization. Monoamniotic twins are ''always'' monozygotic (identical twins).Pregnancy-Info -- > Monoamniotic TwinsRetrieved on July 9, 2009 Monochorionic-Diamniotic twins are ''almost always'' monozygotic, with a fe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diamniotic
The amniotic sac, also called the bag of waters or the membranes, is the sac in which the embryo and later fetus develops in amniotes. It is a thin but tough transparent pair of membranes that hold a developing embryo (and later fetus) until shortly before birth. The inner of these membranes, the amnion, encloses the amniotic cavity, containing the amniotic fluid and the embryo. The outer membrane, the chorion, contains the amnion and is part of the placenta. On the outer side, the amniotic sac is connected to the yolk sac, the allantois, and via the umbilical cord, the placenta. The yolk sac, amnion, chorion, and allantois are the four extraembryonic membranes that lie outside of the embryo and are involved in providing nutrients and protection to the developing embryo. They form from the inner cell mass; the first to form is the yolk sac followed by the amnion which grows over the developing embryo. The amnion remains an important extraembryonic membrane throughout prenatal deve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Philammon
In Greek mythology, Philammon (Ancient Greek: Φιλάμμων) was an excellent musician, a talent he received from his father Apollo. Family Philammon's mother was either Chione (or Philonis), daughter of Daedalion, or Leuconoe, daughter of Eosphoros. By Argiope, a nymph of Mount Parnassos, he had Thamyris. Mythology Philammon was unnaturally beautiful and thus, one of the nymphs (Argiope) seduced the youth and became pregnant. But Philammon refused to take her into his house as his wife and for being ashamed of the pregnancy, the girl left Peloponnese and came to the Akte (shore) where she gave birth to a boy, Thamyris. Philammon was said to have established the tradition of the hymns celebrating the births of Artemis and Apollo, written by himself, being performed by choruses of girls at Delphi. He was the second winner of the most ancient singing contest at Delphi, after Chrysothemis and before his son Thamyris. Some ascribe to him the foundation of the Lernaean my ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Autolycus
In Greek mythology, Autolycus (; Ancient Greek: Αὐτόλυκος ''Autolykos'' 'the wolf itself') was a successful robber who had even the power of metamorphosing both the stolen goods and himself. He had his residence on Mount Parnassus and was renowned among men for his cunning and oaths. Family There are a number of different accounts of the birth of Autolycus. According to most, he was the son of Hermes Pseudo-Apollodorus''Bibliotheca'' 1.9.16/ref> and Chione Hyginus, ''Fabulae'' 201 or Philonis. In Ovid's version, Autolycus was conceived after Hermes had intercourse with the virgin Chione. Pausanias instead states that Autolycus' real father was Daedalion. Pausanias, ''Graeciae Descriptio''br>8.4.6/ref> In some accounts, his mother was also called Telauge. Depending on the source, Autolycus was the husband of Mestra (who could change her shape at will and was a daughter of Erysichthon), or of Neaera, or of Amphithea. He became the father of Anticlea (who married ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermes
Hermes (; grc-gre, wikt:Ἑρμῆς, Ἑρμῆς) is an Olympian deity in ancient Greek religion and Greek mythology, mythology. Hermes is considered the herald of the gods. He is also considered the protector of human heralds, travellers, thieves, merchants, and orators. He is able to move quickly and freely between the worlds of the mortal and the divine, aided by his winged sandals. Hermes plays the role of the psychopomp or "soul guide"—a conductor of souls into the Underworld, afterlife. In myth, Hermes functions as the emissary and messenger of the gods, and is often presented as the son of Zeus and Maia, the Pleiades (Greek mythology), Pleiad. Hermes is regarded as "the divine trickster," about which the ''Homeric Hymn, Homeric Hymn to Hermes'' offers the most well-known account. His attributes and symbols include the herma, the rooster, the tortoise, wallet, satchel or pouch, talaria (winged sandals), and winged helmet or simple petasos, as well as the palm tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apollo
Apollo, grc, Ἀπόλλωνος, Apóllōnos, label=genitive , ; , grc-dor, Ἀπέλλων, Apéllōn, ; grc, Ἀπείλων, Apeílōn, label= Arcadocypriot Greek, ; grc-aeo, Ἄπλουν, Áploun, la, Apollō, la, Apollinis, label=genitive, , ; , is one of the Olympian deities in classical Greek and Roman religion and Greek and Roman mythology. The national divinity of the Greeks, Apollo has been recognized as a god of archery, music and dance, truth and prophecy, healing and diseases, the Sun and light, poetry, and more. One of the most important and complex of the Greek gods, he is the son of Zeus and Leto, and the twin brother of Artemis, goddess of the hunt. Seen as the most beautiful god and the ideal of the ''kouros'' (ephebe, or a beardless, athletic youth), Apollo is considered to be the most Greek of all the gods. Apollo is known in Greek-influenced Etruscan mythology as ''Apulu''. As the patron deity of Delphi (''Apollo Pythios''), Apollo is an o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
