Do mammals produce more sperm than eggs during gametogenesis? Explain the reason for this phenomenon. What is the biological significance of this?
1) during oogenesis, only one ovum with a large supply of nutrients is formed from one primary cell in the process of meiosis, and three reduction bodies die
2) during spermatogenesis, 4 full-fledged smermatozoa are formed from each primary cell, and spermatogenesis also proceeds faster and more often
3) the egg must provide nutrients for the development of the future embryo, and a large number of sperm cells provides an increase in the likelihood of fertilization
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.