Gametic meiosis-zygotic meiosis and sporic meiosis
Explain gametic meiosis, zygotic meiosis, and sporic meiosis?
Expert
Zygotic meiosis refers to the one which happens within the haplontic haplobiontic life cycle. Gametes from the adult haploid individuals join forming the diploid zygote. The zygote undergoes meiosis and produces four haploid cells that through the mitosis develop into the adult individuals. Therefore, in zygotic meiosis the cell that undergoes meiosis is called as the zygote and the gametes are produced through the mitosis. Gametic meiosis refers to that where the meiosis forms the gametes, that is, haploid cells that each of which may join with other gamete resulting the zygote. It takes place in the diplontic haplobiontic life cycle (like, in the humans) where the individual is diploid and meiosis forms the gametes. Sporic meiosis occurs in the metagenesis (alternation of the generations, or diplobiontic life cycle). In this life cycle, cells from diploid individual (known as sporophyte) go through the meiosis generating the haploid spores which do not join with others however instead develop through the mitosis in the haploid individuals (known as gametophytes). In this life cycle, the gametes are formed through the mitosis from cells of gametophyte.
Give an example of the situation where the neuron cell body is situated in the part of body and its axonal terminal portion is in other distant portion of the body? Why this happen, explain?
Explain the chiasms of homologous chromosomes view in prophase I?
Using the examples of the invertebrate nervous systems how can the procedure of evolutionary cephalization be explained?
Specify the stage of cardiac cycle during which the ventricles are generally filled?
What two important functions are carried out by the price system? (1.) It is an automatic mechanism for distributing goods & services.(2.) It finds out the allocation of resources among producers and the final mix of outputs.
Define deplasmolysis of plant cells?
Explain the major natural plant hormones and explain their respective effects?
Explain the term mixed gland? What is purpose the pancreas is considered as a mixed gland?
Describe the function of feet in molluscs? How is the mollusc foot associated to the name specified to the groups of phylum?
Explain the lateral meristems? Specify where they can be found and which type of the plant growth do they promote?
18,76,764
1938068 Asked
3,689
Active Tutors
1416508
Questions Answered
Start Excelling in your courses, Ask an Expert and get answers for your homework and assignments!!