The cells are known as stem cells meaning they can become any cell type. The embryo becomes bigger because certain genes in the DNA are activated allowing the cell to divide or produce certain determination factors that will make a stem cell become a neuron, muscle cell, etc.... The embryo grows in size as the stem cells divide repeatedly and then some of the stem cells become actual specific cells.
When people say that babies get their food from what their mother eat, their wrong that's just a myth. The developing embryo gets its food from the umbilical cord because it transfers blood and liquids to the developing embryo and that's how they get their food.
This was a research done by Hans Spemann, an embryologist of the early 20th century in Germany. His research lead him to conclude that the dorsal and ventral (top and bottom) halves of the embryo were different. The top half contained a certain group of cells that organize development. They are visible on the dorsal surface of a 2-cell-stage embryo. The outcome of his constriction experiments depended on exactly where this structure was in relation to the constriction. If one half of the constriction contained the entire structure, it would develop into an embryo that could live and the other half developed into the belly-piece. If the structure was evenly split during the constriction, the result was twin, including Siamese twin, embryos. If it was split unevenly, it resulted (in some cases) an embryo with two heads (a Siamese twin). He also inadvertently discovered a way to clone during this process of constricting embryos as they split.
Up until now, only women with a family history of genetic disease could have embryos checked in this way. The rules were changed last year and doctors believe this test could help more woman to have babies. The test, called aneuploidy screening, involves checking IVF embryos for signs of genetic abnormalities by taking a single cell for analysis.
Normally they do not, but inverted nipples to occur rarely. At birth all nipples are inverted, this is because of the way glands develope as an embryo, but normall proliferation of the mesenchyme behind the nipple will push it out shortly after birth.
Seeds can develop without fertilization through apomixis, where the embryo is formed without meiosis or fertilization, producing a genetic clone of the parent plant. Another way is through parthenocarpy, where a fruit develops without fertilization, but the seeds within it are not viable.
i dont know if its righ orwrong
The only way is to gain a lot of weight. But they won't be the only thing that gets bigger.
The same way that a human embryo or any other mammalian embryo does.
The embryo is the baby plant. It has an embryo root to push its way eventually out of the seed coat, and embryo stem, and embryo leaves which will later start food production.
through the roots
Think of it this way: The bigger the population gets, the more resources they use, the more pollution they emit and the bigger this problem gets. Reduce the population, and you reduce the levels of greenhouse gases in the atmospere.
A twin is on the way
yes because every volcano explodes and gets bigger and bigger until it is enormous. is the way we used the volcano and it can erupt anywhere or any second. overall a volcano can explode more or less than 300.
yes it gets more painfull as the guages get bigger i would i know iv guaged my earsthe whole way to a 00
everything. It is the way the fetus gets all it needs from the mother and disposes of of practically all waste except heat. The fetus gets nutrients and oxygen from the placenta and the placenta filters the fetus' blood and takes out wastes
A percentage of men are just built that way. You will get hard and some increase in diameter but little increase in length. That's just the way it is and you shouldn't worry about it.
by miscarriage