Navigation Links
Fertilization in Biological Definition

Gamete

... or spores —are the specialized cells that come together during fertilization (conception) in organisms that reproduce sexually . In those species ... External link Gametogenesis (spermatogenesis, oogenesis) & fertilization ...

Infertility

... the woman being artificially inseminated with donor sperm. In vitro fertilization (IVF) in which eggs are removed from the woman, fertilized and then ... in one of the fallopian tubes, along with the man's sperm. This allows fertilization to take place inside the woman's body. Use of a surrogate mother ...

Parthenogenesis

... means the growth and development of an embryo or seed without fertilization by a male . Parthenogenesis occurs naturally in some lower plants ... may be due to the rare (perhaps only one mating out of a million) actual fertilization of eggs by a male, introducing new material to the gene pool. ...

Chromosome

... themselves ( crossover ), and thus create new chromosomes that are not inherited solely from either parent. When a male and a female gamete merge ( fertilization ), a new diploid organism is formed. Figure 3 : Karyogram of human female Karyotype To determine the (diploid) number of ...

Embryo

... from the eighth week of gestation . Stages : morula -> blastula -> gastrula . See also Embryogenesis Embryology In vitro fertilization Plant embryogenesis Embryo space colonization A chick embryo of thirty-three hours' incubation External link Chart ...

Human

... the individual begins at conception . An egg is usually fertilized inside the female by the male through sexual intercourse , though in vitro fertilization methods are also used. The developing individual is first called a zygote ; as it grows through successive stages inside the female's uterus over ...

Malaria

... malaria. Some merozoites turn into male and female gametocytes . If a mosquito bites the infected person and picks up gametocytes with the blood, fertilization occurs in the mosquito's gut, new sporozoites develop and travel to the mosquito's salivary gland, completing the cycle. Pregnant women are ...

Meiosis

... fetal life. Only just prior to ovulation meiosis I is resumed and is then completed at the time of ovulation (meiosis II ends only just after fertilization ). Oocytes that are not ovulated do not complete meiosis I. The end of Prophase I (also known as Prometaphase I ) is signified by contraction and ...

Neural tube

... produced in the notochord and basal plate . Neural tube defects Normally the closure of the neural tube occurs around the 30th day after fertilization . However, if something interferes and the tube fails to close properly, a neural tube defect will occur. Among the most common tube defects are ...

Sperm

... cells, composed normally of a head, basal body (or midpiece ), and tail . The head contains some cytoplasm and the nuclear material for fertilization . The basal body contains a large concentration of mitochondria that provide the energy for sperm motility through the production of ATP . The ...

Zygote

... A zygote ( Greek : ζυγωτόν ) is a cell that is the result of fertilization . That is, two haploid cells—usually (but not always) a sperm cell from a male and an ovum from a female —merge into a single ...
Other Contents
(Date:4/23/2014)... release is available in French and German . ... or female? In humans and other mammals, the difference between sexes ... It is present only in males, where the two sexual chromosomes ... the Y is ultimately responsible for all the morphological and physiological ... been the case. A very long time ago, the X and ...
(Date:4/23/2014)... Huntington,s disease, most in their mid-thirties and forties, ... behavioral decline within two decades. "Mutant" protein clusters, ... disease, have been the primary focus of therapies ... new research from Prof. Gerardo Lederkremer and Dr. ... Cell Research and Immunology, in collaboration with Prof. ...
(Date:4/23/2014)... A team of researchers in Korea who ... brains of nonhuman primates and assessed cell survival ... that the hNSCs had differentiated into neurons at ... The study will be published in a future ... currently freely available on-line as an unedited early ...
Breaking Biology News(10 mins):Male or female? 2Male or female? 3On the defensive 2On the defensive 3Study finds long-term survival of human neural stem cells transplanted into primate brain 2
(Date:4/24/2014)... An Oregon State University researcher has found a relationship ... symptoms of autism spectrum disorder in very young children. ... first to show a direct relationship between motor skills ... gross motor skills should be included in treatment plans ... assistant professor in OSU,s College of Public Health and ...
(Date:4/24/2014)... caused the first flu pandemic in the 21st century. ... more than 50 people in the country. Since 2011 ... (winter/spring seasons). , Infections with influenza pH1N1 virus ... Organization has recommended Tamiflu for treatment of patients with ... is that it targets viral proteins which mutate quickly ...
(Date:4/23/2014)... Hospital (MGH) investigators may lead to greater availability and ... problem use of fecal material from healthy donors ... difficile ( C. difficile ) bacteria. In ... Clinical Infectious Diseases , the researchers report that use ... patients was as successful in curing recurrent C. ...
(Date:4/23/2014)... April 24, 2014 Pregnant immigrants from Sub-Saharan ... increased monitoring during pregnancy, according to new research ... today in the British Journal of Obstetrics ... and eclampsia rates among immigrants and native-born women ... (Ontario), Denmark, Sweden, Spain (Catalonia and Valencia) and ...
(Date:4/23/2014)... Spokane have developed a new way to detect ... the wheel. , Their recently patented technology is ... in drowsy driversand offers an affordable and more ... detection systems. , Van Dongen"Video-based systems that use ... out of its lane are cumbersome and expensive," ...
Breaking Medicine News(10 mins):Health News:Motor skill deficiencies linked to autism severity in new research 2Health News:Use of frozen material for fecal transplant successfully treats C. difficile infection 2Health News:Use of frozen material for fecal transplant successfully treats C. difficile infection 3Health News:Pregnancy complications may be more common in immigrants from certain regions 2Health News:WSU innovation improves drowsy driver detection 2
Other TagsOther Tags