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The question is subject to lively debate. Some say that life begins at fertilization, the moment that sperm enters egg. Others say the life begins at conception, which is when the fertilized egg embeds itself onto the placenta.
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∙ 12y ago
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What are some animals that don't start life as embryo?
Lower animals including Protozoa don't start life as embryo.
When to expect periods after embryo transfer?
Implantation can start to occur as soon as 6-10 days after retrieval (I use "after retrieval" because embryos can be transferred on different days of development. Count the retrieval day as day 0). Five days after the retrieval a healthy embryo will have reached the blastocyst stage. Six-seven days after the retrieval, a healthy embryo will start breaking out of its hard outer shell and begin the implantation process. After the healthy embryo has implanted in the uterus it will not start secreting hCG for several more days. You will probably not be able to feel the implantation process.
What happens to the embryo when the hen lays the egg?
When a hen lays a fertilized egg, there is no embryo inside. Embryo's only start to form once they are incubated.
How long can an embryo survive outside the womb?
It cannot. An embryo is completely reliant on its mother for life.
What needs to happen before the plant embryo can push its way out the seed coat?
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.
What is the relationship between fetus and embryo?
The embryo is the first stage of a baby's life then after 12 weeks it is called a fetus.
What day in the embryo stage do the cardiac contractions start?
cardiac contractions begin aroud the 5th week of pregnancy. A few days after that their limb buds begin to form.
What day does secret life start in 2012?
april1 12
What is inside an olive seed?
my sweet heart also the embryo of an olive tree, and some food for the embryo to consume when and if it is able to start growing.
What happens during your first trimester?
the embryo is moved into the uterus.A sac called the placenta forms around the embryo,connecting it to the uterus by the umbilical cord.the umbilical cord supplies the embryo with nutrients and oxygen from the mother's body.Then the embryo develops into a fetus and limbs, body systems, bones, sense organs, and the brain.
What is the life cycle of the American shad?
Eggs, Embryo, Larvae
What are first two things to start forming in an embryo?
Sperm and ovum.
