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The cell replicates its entire chromosomal DNA only when its about to divide.
Wiki User
∙ 13y ago
Wiki User
∙ 10y agoA cell undergoes DNA replication before it begins to divide (either mitosis or meiosis). This occurs during the S (synthesis) phase of the cell cycle.
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What is continuous cell lines?
The cells are immortal, fast-growing but require only simple media. These cells have undergone transformation and have great chromosomal instability as well as divergence of phenotype.
Why would one not expect to continue increasing in height with age?
because after a certain age, some of the cell/tissue stop producing or replicating. every cell that replicates can only replicate a certain number of time - the number is coded in once DNA.
What is defference between Biological replicates and technical replicates?
Technical replicates: measure quantity from 1 source. This measures the reproducibility of the results. The differences are based only on technical issues in the measurement. (I weigh myself three times, do I get different weights? How different?) Biological replicates: measure a quantity from difference sources under the same conditions. Tumors from 5 different people with lung cancer may show similar gene expression patterns. These replicates are useful to show what is similar in your replicates and how they are different from a different set of conditions (ie. treated, normal).
What are the exceptions to the Chromosomal Theory of Inheritance?
chloroplast have genes but only get them from one parent
What is the difference between virulent phage and prophage?
temperate refers to the life cycle some phages are able to perform. A temperate phage can integrate its genome into its host bacterium's chromosome, becoming a lysogen known as a prophage. A temperate phage is also able to undergo lytic life cycles, where the prophage is expressed, replicates the phage genome and produces phage progeny and the progeny phage leave the bacterium.The virulent phages have only lytic lifecycles and thus infection results in the host cell's death (due to lytic cell destruction-the phage replicates itself and then bursts the cell, releasing many copies).So they are both the same in that they both require a host cell to reproduce. They both can have lytic lifecycles but only the temperate phage can "hitch a ride" in the host cell by integrating into the genome.
How many chromosomes are in a human nerve cell?
Humans have 46 chromosomes in their nerve cells, unless they have a chromosomal disorder. With the exception of the reproductive cells, which only carry half the chromosomal DNA, all human cells have the same amount of chromosomes.
What is continuous cell lines?
The cells are immortal, fast-growing but require only simple media. These cells have undergone transformation and have great chromosomal instability as well as divergence of phenotype.
How many sperm cell does an egg cell normally needs to be fertilized?
Only one. Any more than that would produce a chromosomal mutation in which there would be one or more extra sets of chromosomes and would be lethal.
Why would one not expect to continue increasing in height with age?
because after a certain age, some of the cell/tissue stop producing or replicating. every cell that replicates can only replicate a certain number of time - the number is coded in once DNA.
Definition of gene cloning?
Gene cloning is the replication of DNA fragments by the use of a self-replicating genetic material. Unlike reproductive cloning, which replicates an entire organism, gene cloning duplicates only individual genes of an organism's DNA.
Does Polymorphic Change itself from a virus to a worm?
A polymorphic virus not only replicates itself by creating multiple files of itself, but it also changes it's digital signature every time it replicates.
What is defference between Biological replicates and technical replicates?
Technical replicates: measure quantity from 1 source. This measures the reproducibility of the results. The differences are based only on technical issues in the measurement. (I weigh myself three times, do I get different weights? How different?) Biological replicates: measure a quantity from difference sources under the same conditions. Tumors from 5 different people with lung cancer may show similar gene expression patterns. These replicates are useful to show what is similar in your replicates and how they are different from a different set of conditions (ie. treated, normal).
What are the exceptions to the Chromosomal Theory of Inheritance?
chloroplast have genes but only get them from one parent
Why does the whole word delete when you press the back space key in Excel?
When you press the back space key while you have the cursor on a cell, you will delete the entire cell. If you want to delete only one character, select the cell, put your cursor in the formula bar at the top of the screen, then press the backspace key (that way you will edit only one character at a time instead of the entire cell).
Why the nucleus important to a cell?
the only way for the genetical reforming is the nucleus and also nucleus can control the functioning of the entire cell mostly than other organells.
Can you see all cell organelles by using electron microscope?
Yes, but not the entire organism at once. Only parts of it.
How do you copy a protected cell in excel without removing the protection to another excel sheet?
Cell protection only kicks in when you protect the entire sheet. So for the cell to be protected, then the sheet has to be protected.
