Gametogenesis in men and in women
In accordance with the events during periods of life, how gametogenesis is different in men and in women?
Expert
The formation of the spermatogonia in men occurs during the embryonic period. Formation of the sperm cells though is a constant process which starts in the puberty and carries on until the old age and sometimes during all remaining life of man.
In women, all oogonia are made before the birth. The oogonia turn into the oocytes I which enter first division of the meiosis (meiosis I). This division though gets disrupted at the prophase and continues only in the puberty. After beginning of menses, an egg cell is released during every period and, in case it is fecundated, it ends the meiotic division. The oogenesis impedes after the menopause (i.e. cessation of the menstrual activity) and the climacteric period of life starts.
Differentiate the actions of antibodies against bacteria and virus?
Regression Article Instructions: Read an article. Create a 1 page, double spaced summary of the document. Do not copy sentences from the article. It must be your own work. <
Objective of the co-ordination 1) Harmony of the goals: the goals of the individual may be different from those of the organization . The conf
Write down the cell types which form xylem? And also write down the main aspects of those cells?
why are vaccines made of the own disease agent or of fragments of it?
Write down the main respective constituents of cell walls in the bacteria, fungi, protists and plants?
State the chemical equation explaining the formation of bicarbonate from the carbon dioxide and water? What enzyme is responsible for catalyzing this reaction?
Do echinoderms contain circulatory and respiratory systems?
Write down the main intra-specific ecological interactions?
How does intensity of facilitated diffusion differ in relation to the concentration of the moved substance? Also explain the limiting factor?
18,76,764
1939014 Asked
3,689
Active Tutors
1416434
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!