
Bivalent (bi-from armor. bis – twice + lat. valens, valentis – strong) – the structure containing two homologous chromosomes of a diploid organism which combine (conjugate) in the course of meiotic division of a cell (meiosis).
Allocate a bivalent:
Most of women is capable to derive more pleasure from contemplation of the beautiful body in a mirror, than from sex. So, women, you aim at symmetry.

The advantage of swimming for the person is so high that this sport is not only the most popular, but also is widely applied in copper...
Section: Slideshow
Is told about advantage of domestic animals for development of the child much. But many parents nevertheless do not hurry to bring pets as are afraid that they can do harm to health of children. What troubles can really trap kids and how to make with...
Section: Articles about health
When overcomes feeling of hunger, and an opportunity to have dinner fully is absent, having a snack − the meals, small on volume, stabilizing sugar level in blood comes to the rescue. The relation of nutritionists to having a snack more often negative, but only because as snack people choose the most caloric products with the increased amount of "bystry" carbohydrates: cookies, rolls, chips, candies. Nevertheless, the advantage of having a snack is obvious to weight loss: the person avoids strong feeling of hunger...
Section: Articles about health
Long time antibiotics were considered as a panacea from all diseases and were appointed even at insignificant symptoms of an infection. Even now...
Section: Articles about health
All got used long ago that, having addressed the plastic surgeon, it is possible to modify natural parameters of a figure or to minimize the damages put to appearance with ruthless time. Many people (preferential women) worldwide е...
Section: Articles about health
Smack in a mouth can arise in the natural way – as a result of lack of morning hygiene or reception of the corresponding food. However in certain cases its existence is a sign of certain pathologies, and allows to reveal an illness at an early stage. Depending on character of aftertaste – acid, salty, bitter, sweet – distinguish also diseases which accompany it....
Section: Articles about health
Impossibility to conceive the child – a trouble of many Russian families. During quite long time was considered that the main "culprits...
Section: Articles about health
The modern person not always manages to find housing in the environmentally friendly region and such work which would not do harm to health. With food stuffs at first sight the situation is much better: shops are overflowed with goods which are positioned пр...
Section: Articles about health
Transfusion of donor blood has almost century history. In spite of the fact that this procedure is quite usual for many people, process of blood donation is still surrounded with numerous myths. Today we aimed to discredit the most widespread of them....
Section: Articles about health
There comes the season of issues. Many Russians already dream of outdoor recreation, trips, beautiful seaside beaches....
Section: Articles about health
Milk and products of its processing by right occupy one of the main places in a diet of the modern person. They contain proteins, necessary for normal life activity, fats, vitamins and microelements, and are an important part of various medical diets....
Section: Articles about health
The climax, or menopause is the normal process of the termination of genital function of the woman which is followed by serious hormonal changes in an organism. Usually the menopause begins at the age of 50-55 years, but characteristics of this process are very individual. Factors of earlier approach of a climax are irregular sex life, numerous abortions, addictions, existence of endocrine, autoimmune and gynecologic diseases, frequent stresses and excessive hobby of diets...
Section: Articles about health
EKO, or extracorporal fertilization - a method of treatment of infertility which became the reason of a set broken mines in due time...
Section: Articles about health
According to data of World Health Organization, the cataract is diagnosed almost for 7% of the population of Earth. The statistics of incidence is considered not full as at an initial stage the illness, as a rule, does not cause to the person of special inconveniences, and many having got sick...
Section: Articles about health
Radiological methods of a research are applied in medicine more than hundred years, and thanks to them millions of lives were saved. In many cases without X-ray it is impossible to make exact idea of a condition of bodies and fabrics, it is correct to make the diagnosis. Nevertheless, many myths about researches such continue to exist. Let's consider the most widespread of them....
Section: Articles about health
The list of stereotypes of which, apparently, all know strongly includes following: British surely eat for breakfast овсянк...
Section: Articles about health
Musicotherapy – a treatment method which caused and causes a set of a controversy concerning its efficiency. However the facts are relentless: during the numerous researches curative impact of music on an organism was scientifically confirmed. Since then in a number of the countries a method...
Section: Articles about health
The dietology, as well as other sciences, does not stand still. Food stuffs are exposed to comprehensive study, and scientists obtain new information on their properties and influence on a human body. Unfortunately, this reasonable and natural process gives unpleasant side effect from time to time: some types of food periodically declare "harmful" or even "deadly" without the bases, sufficient on that....
Section: Articles about health
According to doctors, more than a half of men of 25-50 years suffer from frustration of the urinogenital sphere, but sees a doctor from them меньшинс...
Section: Articles about health
Dietary supplements (dietary supplements) for the last decades were so thoroughly included into our life that, apparently, it is already impossible to find the person who at least once did not try them. At the same time, most of our compatriots have a vague idea about...
Section: Articles about health
Diapers for adults – individual one-time means of hygiene which in some situations is irreplaceable and from such situations any person is not insured. Though nobody perceives need of their use with enthusiasm, however without such means already problematic situation could be heavier....
Section: Articles about health
The words "disease" and "patient" not without reason come from one root – "pain". As a rule, symptoms of illnesses thoroughly spoil the patient...
Section: Articles about health
Aging — natural and inevitable process. Over time our skin loses elasticity, on it saggings are formed, the face form loses former clearness. The procedure of nitevy lifting (nitevy tightening) can successfully solve this problem. In order that it is better познако...
Section: Articles about health
Each of us faces from time to time that other people need the immediate help. We react to it differently: one at once call doctors and police, others rush to victims and try to save them independently. Some pass by at all … Certainly, desire to help the neighbor who got into trouble, quite naturally for any decent person. However not everyone understands that to work in a similar situation, being guided by exclusively good...
Section: Articles about health
The number of long-livers is very small. One person from 5 thousand lives up to age of 90 years, and the centenary boundary steps only about...
Section: Articles about health
Each person has easy indispositions which he transfers "standing", trying not to ask for medical care. Arguments at the same time are adduced same: "it is a trifle, itself will pass", "I have too many important issues", "there are no wish to spend time on...
Section: Articles about health
Not everyone can brag of the shining Hollywood smile. Even the person who is regularly visiting the stomatologist and watching of oral cavities over health periodically has problems: enamel of teeth darkens under the influence of some products, on it the deposits giving to teeth a grayish or yellowish shade collect....
Section: Articles about health