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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.
In a diploid cell in which 2n equals 14 how many telomeres are there in each of the follow phases of the cell cycle a. G1 b. G2 c. mitotic prophase d. mitotic telophase?
There are two telomeres for each chromosome, so you need to figure out how many chromosomes there are at each stage and multiply that by two. G1-- growth phase: 14 chromosomes = 28 telomeres G2-- growth phase after replication in S phase: 28 chromosomes= 56 telomeres Mitotic Prophase-- before cell division, nuclear membrane disappears: 28 chromosomes= 56 telomeres Mitotic telophase-- nuclei separate: 14 chromosomes = 28 telomeres
Why are telomeres a necessary component of linear chromosomes?
Telomeres are necessary components of linear chromosomes because they protect the ends of the chromosomes from deteriorating or fusing with other chromosomes. They also help maintain the stability and integrity of the genetic information stored in the chromosomes during cell division.
Why are telomeres essential for the stability and integrity of linear chromosomes?
Telomeres are essential for the stability and integrity of linear chromosomes because they protect the ends of the chromosomes from degradation and fusion with other chromosomes. They also help prevent the loss of genetic information during cell division.
What are the key differences between prokaryotic chromosomes and eukaryotic chromosomes in terms of structure and organization?
Prokaryotic chromosomes are simpler and circular, found in the cytoplasm, while eukaryotic chromosomes are more complex and linear, found in the nucleus. Eukaryotic chromosomes are organized with histone proteins into chromatin, while prokaryotic chromosomes lack histones.
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.
In a diploid cell in which 2n equals 14 how many telomeres are there in each of the follow phases of the cell cycle a. G1 b. G2 c. mitotic prophase d. mitotic telophase?
There are two telomeres for each chromosome, so you need to figure out how many chromosomes there are at each stage and multiply that by two. G1-- growth phase: 14 chromosomes = 28 telomeres G2-- growth phase after replication in S phase: 28 chromosomes= 56 telomeres Mitotic Prophase-- before cell division, nuclear membrane disappears: 28 chromosomes= 56 telomeres Mitotic telophase-- nuclei separate: 14 chromosomes = 28 telomeres
Why are telomeres a necessary component of linear chromosomes?
Telomeres are necessary components of linear chromosomes because they protect the ends of the chromosomes from deteriorating or fusing with other chromosomes. They also help maintain the stability and integrity of the genetic information stored in the chromosomes during cell division.
What are repetitive DNA sequences in the ends of chromosomes called?
Telomeres
Why are telomeres essential for the stability and integrity of linear chromosomes?
Telomeres are essential for the stability and integrity of linear chromosomes because they protect the ends of the chromosomes from degradation and fusion with other chromosomes. They also help prevent the loss of genetic information during cell division.
Heterochromatic regions at the ends of chromosomes are?
telomeres, which are essential for maintaining the stability and integrity of the chromosome. They protect the chromosome ends from degradation and prevent them from fusing with other chromosomes. Telomeres also play a role in regulating the cell's lifespan and preventing chromosomal abnormalities.
Do prokaryotic cells have chromosomes?
No
What is the enzyme that replicates the end of chromosomes?
Telomerase is the enzyme that replicates the end of chromosomes, specifically the telomeres. Telomeres are protective caps at the ends of chromosomes that shorten with each cell division, and telomerase helps maintain their length to prevent loss of genetic information and cellular senescence.
What are the key differences between prokaryotic chromosomes and eukaryotic chromosomes in terms of structure and organization?
Prokaryotic chromosomes are simpler and circular, found in the cytoplasm, while eukaryotic chromosomes are more complex and linear, found in the nucleus. Eukaryotic chromosomes are organized with histone proteins into chromatin, while prokaryotic chromosomes lack histones.
The enzyme telomerase solves the problem of replication by?
Telomerase helps solve the problem of DNA replication by adding repetitive sequences to the ends of chromosomes, known as telomeres. This prevents the loss of important genetic information during each round of cell division. By preserving the length of telomeres, telomerase maintains the stability and integrity of chromosomes.
What are the end of the chromosome called?
The ends of chromosomes are called telomeres. Telomeres help protect the ends of the chromosome from deteriorating or fusing with other chromosomes during cell division. They also play a role in determining the lifespan of a cell.
A type of protein found in eukaryotic chromosomes but not prokaryotic chromosomes is?
Histone
