MadSci Network: Genetics |
in a male they are called spermatagonia and are located in the testicles. some of these cells will divide mitotically to produce male germ cells while others will become what are called primary spermatocytes and undergo sprematogenesis ( the process of making sperm ). in females the eggs develope from oogonia. Both of these are present at birth so would be considered specialized cells. As to the telomere lenght i try to keep up with all of the research being done with telomeres but it is a lot and i have not read anything directly discussing telomere lenght in reproductive cells. however, these cells do have telomeres so i would assume that they to shorten with each mitotic division. most of the cells will be of different lenghts because different cells in the body divide at different rates. the egg of a woman for instance only divides mitotically once before it is shiped off in the hopes of becoming a little zygote. by the time that particular egg does that some of the other cells in your body could have divided thousands of times. a clone from the DNA of an egg or sperm would have a zero biological age especially if it has not started to develope into a zygote or anything. as for the cats thanks for the link. i didnt think about that but yes, if the cat was a female the coat could be different, but only in females.
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