Gametes and sexual spores
What is the basic difference between gametes and sexual spores? Do humans exist sexual spores or gametes?
Expert
Sexual spores are structures produced from meiosis with ploidy (that is, number of chromosomes) decrease to a half compared to the spore mother cell.
Spores germinate and provide existence to gametophytes, individuals that by mitosis make gametes. The meiosis which produces sexual spores is termed as sporic meiosis; it is, for instance, the kind of meiosis which takes place in plants.
Gametes are as well cells with half the number of chromosomes of the normal cell of the species, however they are specialized in fecundation, the fusion with other gamete which produces the zygote, a cell with double number of chromosomes than gametic cells.
Gametes can emerge from gametic meiosis or by mitosis in the gametophytes originated from sexual spores. In humans as well in most of animals the meiosis is gametic. There are neither spores nor modification of generations. The male gamete is the sperm cell, and the female gamete is an egg cell.
Write the categorization of lymphocytes?
Write down the function of platelets? What consequences do the clinical situation known as thrombocytopenia yield?
What do you mean by mechanical digestion? In arthropods, molluscs, earthworms, vertebrates and birds, which organ participates respectively in this type of digestion?
Write down the activation center of enzyme? Is it key or lock of the lock and key model?
State what are peristaltic movements? State their role within the human digestion?
Where in the leaves is photosynthetic tissue frequently located?
Quality Assurance or Quality Control: The words “quality assurance” and “quality control” are frequently employed interchangeably to refer to ways of making sure the quality of a service or product. The words, however, have dis
Define cell theory in brief?
Specify three main parts in which a neuron can also be divided? Explain their respective functions?
Describe, how does phosphocreatine acts in the relaxation and muscle contraction?
18,76,764
1944836 Asked
3,689
Active Tutors
1440370
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!