The birth of a child is an unusual, enchanting moment. The whole life of a young mother begins to revolve around a small miracle that has come into the world. And if a woman is presented with two (or more) babies, then happiness becomes greater.
The birth of twins carries with it excitement, the upcoming chores for care, sleepless nights, however, the moment of the birth of children is filled with happiness.
Kinds of twins
If a woman has a multiple pregnancy, then she will have twins. Children can be exactly the same, or even slightly similar, and even heterosexual. It all depends on how the fertilization of the egg. Depending on this, the twins are divided into:
- identical (monozygous);
- heterogeneous (dizygotic).
Identical twins
The birth of two absolutely identical children remains a mystery to humanity. Why at the initial stage the egg begins to divide and create the same embryos remains unknown.
Monozygotic twins are the result of fertilizing one egg with one sperm. The resulting diploid cell begins to divide, as a result of which independent embryos form. Often there are two, but there may be more. The similarity of future babies from such a pregnancy is determined by the time of separation of the embryos. If it occurred in the first 5 days, then the embryos each have their own placenta and amniotic fluid. In this case, the appearance of future babies will be minor differences. If the separation occurred after the fifth day, the embryos have one common placenta and their similarity between them becomes absolute.
An interesting fact: monozygotic twins in most cases have identical fingerprints.
The reasons for the separation of the zygote into two or more identical embryos have not yet been studied. The probability of having identical babies is 3 to 1000 and does not depend on heredity.
Gemini twins
The conception of such twins results from the fertilization of two eggs by different sperm. With intrauterine development, each embryo has its own placenta and develops independently of the other. Dizygotic twins can be either same-sex or same-sex. Their external resemblance will be, like those of brothers and sisters who were born from the usual one-year pregnancy.
Gemini twins conceptions can be a difference of several hours, and possibly even several days.
Features of the development of dizygotic twins
The following facts are known about born twin brothers:
- their genes coincide by about 40-50%;
- each embryo has its own placenta and its amniotic fluid;
- born babies can be either same-sex or same-sex;
- children may have different blood types;
- the likelihood of their occurrence increases in women older than 35 years;
- as a result of the IVF procedure, twins most often appear, as a woman has several fertilized eggs.
Is it realistic to plan the birth of twins?
The birth of a child is an unusual, charming feeling that arises in a young mother who gave birth to a child. And the birth of twins (twins) contributes even more to the feeling of happiness. However, it is impossible to plan their appearance.
When an egg is fertilized, information about the future baby and about whether it will be a pregnancy - single or multiple - is immediately laid, so it is impossible to influence this process naturally. You can only find out the factors, the observance of which increases the likelihood of twins.
These factors include:
- pregnancy at the age of 35-39 years;
- the presence of twins in a generation (the appearance of identical ones is not associated with hereditary factors. To date, it has not been studied why and under what conditions an egg begins to divide);
- short menstrual cycle (20-21 days) - with this cycle, the probability of maturation of several eggs increases;
- infertility treatment. In the treatment of infertility, hormonal drugs are used that stimulate egg maturation and ovulation, a multiple pregnancy can result;
- in vitro fertilization - in vitro, often leading to the birth of twins or even more babies.
The differences between twins and twins
We can summarize what distinguishes identical twins from different twins. Consider the characteristic features that babies who have been born with multiple pregnancy will have.
Identical twins:
- Children have identical affinities, but at some points it may be mirrored. For example, a mirror image of existing moles.
- In addition to the external similarity, the physique, hair structure, tooth position, voice timbre, and even thoughts are similar.
- They have the same blood type and most often similar fingerprints.
- Always same-sex, they are also called natural clones.
- It is impossible to plan the birth of monozygotic twins.
Gemini twins:
- There are both same-sex and same-sex.
- May have different blood types.
- The outward resemblance is superficial.
As you can see, there are no similarities between identical and non-identical twins, only one name is “twins”. Moreover, it is customary in the people to call identical babies twins, and heterosexual ones as twins, triplets, etc. Differences between them begin to appear from the moment of conception.
Conclusion
The appearance of two or more babies as a result of one pregnancy carries with it increased attention of people around to children. At the same time, the twin brothers look like ordinary brothers and sisters (2 sisters or 2 brothers), so they do not attract close attention.
The identical twins always cause interest in society. Most likely, this is due to the rarity of this phenomenon. Therefore, seeing two absolutely identical people, a passer-by will definitely stop his gaze on them.
At the same time, you need to know that multiple pregnancy is observed under special control, since the body experiences a greater load than during normal pregnancy. Expectant mother should be attentive to her health. Therefore, in order to give birth to healthy twins, it is necessary to listen to the doctor’s recommendations, then the moment of meeting with the kids will be filled only with positive.