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In a divided cell, the nuclei is identical because it can only reproduce "A sexually" in a sense. Meaning, that if offspring is reproduced, then it must have the genes of the parent cells, but if there is only one parent, then it will have only the exact genes of the single parents, there by being identical.
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What happens to a cell after cell division?
The end product of cell division is two complete cells that have genetically identical nuclei.
Why must DNA be able to copy it self?
so the organism can continue to live? (Answer provided to make ppl tell the right answers) Answer It's probably better to just look it up in the textbook in order to get the correct answer.
Assume a sperm has penetrated a polar body and their nuclei fuse why is it unlikely that the resulting cell will form a healthy embryo?
This isn't a forum for doing your homework for you. Look up what a polar body is (yes, you need to know) and then it will be obvious.
Do twins need to be in the same sac to be identical?
they are always the same gender
Why mammalian RBC does not have nucleus in it?
Mammal RBC's do have nuclei in them in their early stages, but by the time they reach maturity the nucleus is gone. There is no need for the nucleus after maturity since the cell's function is fairly passive. A nucleus would be required if the cell needed to produce a product or perform a task like cell division, but since it doesn't need to do these things a nucleus is not necessary. The nucleus is required at the early stages in order to produce the hemoglobin that eventually fills the cell. If the nucleus didn't disappear it would either make the cell too large to slip through capillaries or would reduce the oxygen carrying ability of the cell by displacing some of the hemoglobin that would fill it.
Is the nucleus found in a animal cell or a human cell?
I think you need to rephrase your question. A human cell IS an animal cell. Humans are animals. And yes, nuclei are found within animal cells, human are otherwise.
Why is it impotent for DNA to be copied before cell division?
In a cell division, you need exact copy of the original cell. DNA is the blue print of the cell. You have to produce two identical copies of the original DNA. Because DNA decides every character of the cell.
Is a nuclear pore prokaryotic?
A nuclear pore is not a cell. It is not even an organelle, only a characteristic/part of the nucleus. I think you mean are cells with nuclei prokaryotic. No, possessing nuclei is a characteristic of eukaryotic cells. If you need more information, see the related link.
Cells that are active in exocytosis would likely contain many?
If a cell is very active, it would need to have a large number of Mitochondria.
Why is DNA copied in the process of replication?
DNA replication occurs because there need to be two identical copies of DNA before the nucleus of the cell divides, so that each new nucleus has a complete and identical copy of DNA.
What happens to a cell after cell division?
The end product of cell division is two complete cells that have genetically identical nuclei.
What is the meaning of cytokineses?
It's the final stage in the cell cycle and what it does is it separates the two nuclei into two daughter cells. In animal cells, the cell membrane pinches together to divide the cell's cytoplasm and organelles. In plant cells, a cell plate is made along the middle of the cell to divide the cell. You'd probably need to know about interphase and mitosis to understand what I meant above ^
Why must DNA be able to copy it self?
so the organism can continue to live? (Answer provided to make ppl tell the right answers) Answer It's probably better to just look it up in the textbook in order to get the correct answer.
What is process of cell division by mitosis?
Mitosis is the division of cells. All the cellular contents get dived up between the two daughter cells, and the DNA is duplicated and then separated into both cells, so that both daughter cells have identical copies of DNA. This is different from meiosis which is how gametes (sex cells - sperm and eggs) divide.
Cells are made up of?
Yes. Cells can reproduce in asexual ways. A sexual means it does not need to parents to reproduce. Once the cell starts reproducing, the new cell will have the same identical features and organelles as the last one had.
Division of the cytoplasm following mitosis?
Here is a biology I level answer for cytokinesis. I'm pasting it from the library.thinkquest.org website:CytokinesisNow there are two separate nuclei, but they are in the same cell. The cell now needs to be split in half. Cytokenesis begins in anaphase and continues on through telophase. The first visible sign of cytokenesis is when the cell begins to pucker in, a process called furrowing. Furrowing tends to take place at right angles to the axis of the spindle (so that each nucleus is placed in a different cell of course!). The cytoskeleton is reused to build the next spindle for mitosis. Now the two cells will continue the cell cycle and begin their interphase again! For more specific and detailed information you will need to hear from a real biologist.
What do skeletal muscles look like under a microscope?
Characteristically banded (sarcromeres) long cells with a lot of nuclei. The cell fibers also have a bunch of smaller cells around them, fibroblasts, which can fuse with the fibers if need be.
