What is telomerase and why is it important? Telomerase is an enzyme that is employed in rapidly dividing cells such as embryonic stem cells and sperm in order to maintain the length of telomeres present at the end of chromosomes. What is the function of telomerase? Telomerase is responsible fo...
This chapter considers to what degree this concept is applicable to the subtelomeres of plant species with different genome sizes paying a special attention on the own results on the rye (Secale cereale) subtelomeric heterochromatin. The rye belongs to the species with a large genome size (8.3...
As in the majority of tissues, the hair follicle has stem cells. There are two types of stem cells that are responsible for the continuous renewal of the follicles. The first type is called active stem cells and they start dividing quite easily. Stem cells of the second type are called qu...
The first gap in the cell cycle (G1) corresponds to: A.the beginning of mitosis B.the phase in which DNA is being replicated C.the phase between DNA replication and the M phase D.normal growth and functioning When does DNA synthesis occur in mitosis? What happens to telomeres during DNA...
DNA polymerase reads the base sequence and adds complementary nucleotides to the growing strand. This is done for both sides of the parent molecule. Thus, two daughter molecules are produced, each having half of the parent DNA and half of newly synthesized DNA. This type of replication is ...
What is recombinant DNA and for what it is used for?What is DNA ligase? What does it do?Which characteristic is exclusively related to the organization of DNA in eukaryotes? a. plasmids b. double-helical DNA c. telomeres d. circular DNA...
so the chromosome is now losing important genetic information and is no longer functional. But as long as the telomeres are a certain length they keep this from happening. So it seems that when the…by looking at the length of the telomeres on specific chromosomes, we can actually predict, ...
and so on. The unique job of stem cells is to make all these other types of cells. They are the suppliers of new cells. When stem cells divide they can make more of themselves or more of other types of cells. For example, stem cells in skin can make more of themselves or they can...
At this point in time I would tend to be against human cloning,but only because we haven't sufficiently developed the technology yet,and the clone is likely to have a lot of genetic defects (which can lead to genetic diseases and/or other health issues) and shortened telomeres (which would...
It is the purpose of this article to discuss what we can learn from contemporary viruses about their potential role during the history of life and evolution – apart from causing diseases. Their contribution to the development of life, genome composition, genetic diversity, our environment, and ou...