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The tips of chromosomes are called telomeres, which are protective structures that consist of repetitive DNA sequences and associated proteins. Telomeres prevent the degradation of the chromosome ends during DNA replication and protect the genetic information from being lost or fused with other chromosomes. As cells divide, telomeres shorten, which is associated with aging and cellular senescence. Once they become too short, the cell can no longer divide, leading to a state of growth arrest.
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What is the tip and base of a sassafras leaf?
The tip or apex of a Sassafras leaf is rounded The base of a Sassafras leaf is cuneate Have fun with your leafiness ^^
A cell in the stem tip of a corn plants contions 20 chromosomes After this cell divides how many chromosomes should each resulting daughter cell contain?
Each resulting daughter cell should also contain 20 chromosomes. During the cell division process known as mitosis, the cell's chromosomes are duplicated and then divided equally between the two daughter cells.
What discovery in the 1900 supported Mendel's ideas?
Chromosomes
What is the name of the string of repetitive DNA at the tip of each chromosome in the body?
The repetitive DNA at the tip of each chromosome is called a telomere. Telomeres protect the chromosome from deterioration or fusion with neighboring chromosomes, and they shorten with each cell division. This shortening is linked to aging and disease.
How many chromosomes does a kidney cell have?
There are 46 chromosomes in kidney cells, big toe cells, and tip-of-the-nose cells.This is because humans are diploid organisms (having two sets of chromosomes in all cells except gametes(23 chromosomes) and mature red blood cells, which extruded their nuclei when they were developing), and 46 is the human diploid number.
How is a tip sealed ampule distinguished from a pull sealed ampule?
Pull seals are made by heating the neck of ampule below the tip while tip seals are made by melting the glass at tip of neck until a bead form that closes the opening
What is concave chisel?
One with a rounded tip for carving.
What is a 15 percent tip of 34.99?
If you pay $34.99, then the tip you pay is $34.99*0.15 or $5.25(rounded).
What is the same about the chromosomes of the whitefish embryo and the onion root tip?
... Did Ben answer this?: ... Did Ben answer this?:
What is a concave chisel?
One with a rounded tip for carving.
Who rounded the tip of Africa without realizing it?
vasco de gama
The bill was 21.45she decided to tip 18 percent and rounded her tip to the nearest whole centhow much did she leave for the tip?
Three dollars and eighty six cents.
Is a firing pin in a gun pointed or blunt?
On a center fire gun, rounded tip. On a rimfire gun, the tip is shaped a bit like the tip of a screwdriver blade.
What is the tip and base of a sassafras leaf?
The tip or apex of a Sassafras leaf is rounded The base of a Sassafras leaf is cuneate Have fun with your leafiness ^^
Who rounded the tip of Africa in 1487?
We are studying this in school and according to the facts back then its said to be rounded by Bartolomew Diaz.
What is the protective cap of DNA on the tip of chromosomes?
The telomere is the protective cap of DNA on the tip of chromosomes. You lose a small amount of these telomeres each time the cell divides. Eventually the telomeres be lost as you age. Short chromosomes because of lack telomeres are one reason aging occurs.
Who rounded the southern tip of Africa and came to India in 1948?
Vasco da Gama
