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.
Why is meiosis significant for the maintenance of normal quantity of chromosomes of the species with sexual reproduction?
Give a brief introduction of the term Alzheimer's disease?
What is the role of the flagellum of a sperm cell? Also how is this formed?
How is the finding of ribosome within mitochondria and chloroplasts described?
Data Center Operations: It support a holistic approach to data center operations that pulls from best practices gained from Information Technology Infrastructure Library (abbreviated as ITIL) framework for service operations. The approach judges seven
In the time of Darwin the results of Mendel’s research on biological inheritance had not been published, Genetics was not yet developed, neither DNA nor the concept of genetic mutation were known. What is the modern darwinist theory that incorporates these bodie
Cytoplasmic inclusions: Cytoplasmic inclusions are the cytoplasmic molecular aggregates, like pigments, organic polymers and crystals. They are not considered in cell organelles. Fat glycogen granules and drops and
How has the position of stomata altered in some plants to avoid excessive water loss by the transpiration?
Specify the function of collagen fibers of connective tissue?
Give a brief explanation of the gross primary production of the ecosystem. How GPP relate to the photosynthesis?
18,76,764
1952448 Asked
3,689
Active Tutors
1434121
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!