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The enzyme telomerase solves the problem of replication by?
Telomerase is an enzyme that adds nucleotides to the ends of telomeres in chromosomes. They do not solve any problems in replication
Heterochromatic regions at the ends of chromosomes are?
Telomeres.
Do centromeres and telomeres encode special gene products?
true
What are repetitive DNA sequences in the ends of chromosomes called?
Telomeres
In eukaryotic cells each chromosome has?
centromere, histone proteins, telomeres
What sequence of bases repeat in telomeres?
in the human and the vertebra TTAGGG->->->->-
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.
Is obesity related to telomeres?
Yes. We all begin as 1 cell and as it divides the telomeres become shorter. Larger people have more cells than smaller people and therefore have shorter telomeres.
What is structure is the mitotic clock?
Telomeres
The enzyme telomerase solves the problem of replication by?
Telomerase is an enzyme that adds nucleotides to the ends of telomeres in chromosomes. They do not solve any problems in replication
Why do prokaryotic chromosomes not have telomeres?
because it has its own modification and restriction system which prevents its own DNA from degradation as telomeres are mainly responsible to protect the DNA from exonuclease activity of DNase.
How do you naturally lengthen telomeres?
regular exercise.
At what part will DNA strand separate?
telomeres
What helps to prevent the loss of genes?
Telomeres
Heterochromatic regions at the ends of chromosomes are?
Telomeres.
Can you at least live long like your mother who is almost 100?
The chances of you living longer with a parent who is almost 100 are certainly higher. You must thank her for her cytoplasm (mitochondria) and long telomeres.
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
