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Q. Concerning events during the periods of life how different is the gametogenesis in men and in women?
The formation of spermatogonia in men takes place during the embryonic period and formation of sperm cells however is a continuous process that begins in the puberty and goes on until old age and sometimes during all the remaining life of the man.
In women all oogonia are formed before birth and oogonia turn into oocytes I that enter the first division of meiosis (meiosis I) this division however is interrupted at prophase and continues only in puberty. After the beginning of menses an egg cell is released during each period and if fecundated it finishes the meiotic division and oogenesis stops after menopause (cessation of the menstrual activity) and the climacteric period of life begins.
(a) Name the condition and (b) describe the effects of the failure of the pancreas to produce sufficient-insulin. (c) How is this condition treated? .
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What problem would most likely to occur if a haploid cell attempted to perform meiosis?
Coevolutionary relationships between parasites and their hosts can be more complicated than between predators and their prey. As in the case of prey-predator relationship, one can
Pathphysiology Streptococcal upper respiratory infection leads to production of antibodies. An abnormal immunological response to the upper respiratory infection with Beta- h
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