INDS 211 Lecture 15: 15 The Male Reproductive System 2
2 Jan 2019
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Testosterone needs to be concentrated in the tubules; if the con"c in tubules were that of serum don"t have to increase testosterone levels to normal" to have. Spermatozoon: magic: 1) shed most cytoplasm, 2) compacted it"s nucleus; 3) can recognize egg; 4) developed an engine (mitochondrial sheath and axoneme); 5) gotten rid of extra junk. Sperm chromatin: dna is 6-fold more compacted in sperm than in. 100% spermatogenesis somatic cells: striking change from cell to sperm. They get replaced by transition proteins and then those get replaced by protamines! not removed are kept at sites where you reinitiate the reading of the male dna inside the zygote. Until 2010, dogma was: only purpose of sperm was dna delivery to oocyte. However, it"s been discovered that the dna methylation pattern critical, and the 8-10% of histones body compartment, which includes proteins not seen by immune system. So if you inject a man"s sperm into his.
