The Importance of Reproduction
There are two forms of reproduction sexual and asexual reproduction. (1) Sexual reproduction occurs by the passing genes from parents to offspring. Animals are usually considered fit or well adapted to their surroundings depending on their ability to mate and produce offspring. Sexual reproduction is more valuable than asexual reproduction because it allows for the selection of certain traits and genes. For example in the wild, female fish will avoid males who have spots on them that signify parasites because they want their offspring to have a strong immune system. Asexual reproduction is a type of reproduction that that does not involve meisis or fertilization, and the offspring is a clone of parent organism because there is no exchange o genetic material. (2)
Meiosis
Meiosis is important in sexual reproduction because it is the process that acilitates cell division to give rise to gametes.To complete meiosis, a cell duplicates its chromosomes once but then goes through two rounds of chromosome segregation, which reduces the genome by half. Mitosis is also important because it is the system by which plants and animals grow.When the cell divides a complete copy of the first cell's DNA must be replicated in the new cell. Some salamanders, unlike many other species in the ClassAmphibia,reproduce internally rather than externally. A mate is selected, then the male passes sperm to the female internally. Some salamanders lay their eggs on land, others do so in aquatic environments. Reproduction varies slightly between species of salamanders. (1)
Metosis:
Mitosis is the division of one cell into two cells. The process of mitosis occurs only in eukaryotic cells but occurs differently in different types of cells. Mitosis occurs in order organisms to grow. For instance, a human being starts out as one cell but then grows to many through the process of mitosis.Mitosis is the process in which a eukaryotic cell nucleus splits in two, followed by division of the parent cell into two daughter cells. The word "mitosis" means "threads," and it refers to the threadlike appearance of chromosomes as the cell prepares to divide. Early microscopists were the first to observe these structures, and they also noted the appearance of a specialized network of microtubules during mitosis. As mitosis progresses, the microtubules attach to the chromosomes, which have already duplicated their DNA and aligned across the center of the cell. There are five stages in the process of Mitosis, interphase, prophase, metephase, anaphase, and telephase. (1)
How Do Salamnder Reproduce:
Amphibians reproduce sexually reproduce by a female amphibian laying gelatinous eggs in water then a male deposits clouds of sperm over them. This is one reason why amphibians are seldom found far from water. Unlike most species of salamanders, the Fire Salamnders give birth to live salamnders meaning that they do not have eggs.Many varieties of fire salamanders reproduce in the way of live birth, which makes them very unique when compared to other varieties of amphibians.(1) They are so unique that they give birth not to nymphs or larva, but to smaller versions of the adult salamander, much like humans and other mammals. Normally, laying eggs in water is a defining characteristic of amphibians, but not for fire salamanders.Even though most species of the Fire Salamnder reproduce by live birth, depending on how develped the species is some might still reproduce bt laying eggs. Fire Salamanders have a variety of different methods to reproduction depending on the subspecies. If the subspecies has eggs on the body until development is over, than gestation periodvarious between species. Fire Salamanders can have anywhere between twenty and thrity offsprings at a time. After Salamnders reproduce, they go through a process called metemorphisis. Metemophisis is the trasition of larva to a full develped organism. They develpe from egg → embryo → tadpole/ larva → full organism. (1)