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At around 5 weeks of embryonic development, a human embryo contains a relatively small number of totipotent stem cells, which are capable of developing into any cell type in the body, including the placenta. Initially, after fertilization, the zygote is totipotent, but as the embryo develops and cells begin to differentiate, this totipotent capacity diminishes. By the 5-week mark, the embryo has transitioned primarily to pluripotent stem cells, which can give rise to various cell types but not to the placenta. The exact number of totipotent cells at this stage is not well-defined, as most of the totipotent cells would have already given rise to pluripotent cells.
What else can I help you with?
Which part of the fruit contain the embryo?
The ovary (which becomes the fruit) contains an ovule (or several to many ovules) which becomes the seed which contains the embryo.
Where in the body cell populations would undergo rapid mitosis?
you would most likely see the rapidly dividing cells in the outside of the plant because the skin of plants contain cells, so there would be many rapidly dividing cells there.
How many cells make up an embryo?
Stem cell transplants can be either auto (patient's own stored cells) or allo (related or unrelated donor.) According to the National Marrow Donor Registry, currently 3500 unrelated donor transplants are performed each year in the U.S. Auto transplants are at least twice as common but I didn't find a number for them.
How many light sensitive cells does retina contain?
one
How many sex cells contribute when they combine?
Generally two sex cells i. e. the male gamete combines with the egg to form the zygote that develops into a new organism (embryo).
Which part of the fruit contain the embryo?
The ovary (which becomes the fruit) contains an ovule (or several to many ovules) which becomes the seed which contains the embryo.
How many cells are there in a nucleus?
Nuclei do not contain cells, cells contain nuclei (normally, one nucleus per cell).
Do plant cells contain many vacuoles?
ture or palse plant cells contain many small vacuoles? yes by rosi
Where in the body cell populations would undergo rapid mitosis?
you would most likely see the rapidly dividing cells in the outside of the plant because the skin of plants contain cells, so there would be many rapidly dividing cells there.
How many cells does a full grown cell have?
cells don't contain other cells
How many cells does amoeba contain?
1
How many cells does a volvox have?
They can contain up to 50 000 cells. (Wikipedia)
How many cells does volvox have?
They can contain up to 50 000 cells. (Wikipedia)
How many chromosomes do the sperm cells contain?
23
Why do same cells contain many mitochondria?
Skeletal muscle cells, for instance, contain many mitochondria because the energy consumed in the contraction of the sarcomere is enormous. Skin cells, for instance, contain much less mitochondria as the cellular work the need to do is minimal compared to skeletal muscle cells.
What is a blastodisk?
A blastodisk is a round, flattened region of cells from which the embryo of many vertebrates begins to develop in the fertilized ovum.
How many cells make up an embryo?
Stem cell transplants can be either auto (patient's own stored cells) or allo (related or unrelated donor.) According to the National Marrow Donor Registry, currently 3500 unrelated donor transplants are performed each year in the U.S. Auto transplants are at least twice as common but I didn't find a number for them.
