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Cows that have been selected to hold the embryo of another cow until birth in an Embryo-Transfer program.
Wallabies usually have just one joey at a time, but on rare occasions have been known to give birth to twins.When a wallaby mates, that mating will only produce one baby. However, sometimes, a female wallaby will mate just after she has given birth, yet the young embryo will stop developing until conditions are right for it to continue its development and to be born.Like kangaroos, wallabies have embryonic diapause, meaning they can be in a perpetual state of pregnancy. A young joey may be born while an older joey is still in the pouch or, if environmental conditions are not the best for raising another young one, the female can suspend development and birth of the embryo for some time.
We won't find out until we get an ultrasound done on it or wait until it gives birth.
Generally, a wallaby has just one young (joey) at a time. However, there may be more than one young, of different ages, in the pouch at a time. Like the kangaroo, many species of wallabies have embryonic diapause, in which they are able to suspend the development of an embryo until such time as the conditions are right for that young one to be born. So, a wallaby may hold the embryo in suspension, releasing it for birth when the current joey is a bit older. The mother is then able to feed two joeys of different ages, according to their needs.Twins, although uncommon, have been recorded.
The uterine tube is called the fallopian tube and the lining is made up of tiny hairlike, fingers called fimbria. The fimbria move the developing embryo along the fallopian tube to the uterus where it will embed itself. Here it will grow and develop until it is ready to be born in about 9-10 months..
In humans, the prefetal product of conception from implantation through the eighth week of development.
Embryo, between the 3rd and 8th week. Fetus, after the 8th week
a fetus
embryo
This cluster of cells change the baby grows from pre-embryo to embryo to fetus.
The embryo lasts until about week 10 or 11 and then it is known as a fetus.
Fetus
embryo
Cows that have been selected to hold the embryo of another cow until birth in an Embryo-Transfer program.
fetus
An embryo is a multicellular diploid eukaryote in its earliest stage of development , from the time of first cell division until birth, hatching, or germination . In humans, it is called an embryo until about eight weeks after fertilization
An embryo is a multicellular diploid eukaryote in its earliest stage of development , from the time of first cell division until birth, hatching, or germination . In humans, it is called an embryo until about eight weeks after fertilization