Why is reproduction important?
Well for starters, the survival of a species depends on its reproductive success. In other words, in order for a species to continue, sexual reproduction is necessary. There are two types of reproduction; sexual and asexual. Sexual reproduction requires two parents and is genetically variable. Asexual reproduction requires only one parent and makes clones. There are four types of asexual reproduction; binary fission, budding, fragmentation (regeneration) and vegetative propagation. Binary fission is when DNA replicates. This is most i common in bacteria. Budding is when an organism, commonly hydra, forms another identical organism that eventually falls off. Fragmentation is when an organism's arm, for example gets cut off and grows a new one. And lastly, vegetative propagation is when roots of a plant spread by meiosis and creates more.
What is meiosis and mitosis and why is it important?
Meiosis and mitosis are also very important parts of reproduction. These two processes are cell divisions but serve different purposes. Mitosis makes new cells that are identical, like skin cells and makes an exact copy of the cells. The product of mitosis also results in two cells and these cells have a full set of chromosomes at the end, or diploid cells. Without mitosis, asexual reproduction wouldn't be able to occur because asexual reproduction is an exact copy of the parent. Meiosis, unlike mitosis, makes sex cells, or gametes. The result of meiosis are four cells that have half of the chromosomes called haploid cells. This is not reproduction because there are only half the number of chromosomes, and therefore needs fertilization. Meiosis is important for sexual reproduction because without it, there wouldn't be gametes for reproduction.
how does an angler fish reproduce?
The Angler fish has a very bizzare way of reproducing. At birth, males are born with olfactory organs that can detect mates. The males main goal is to find a mate. Instead of just being around its mate, the pale attaches itself to the female and releases an enzyme that digests the skin of his mouth and her body, fusing them together. Now, the male feeds of the females nutrients and blood and the female gets sperm whenever she is ready. Some species of bony fish release unfertilized eggs and sperm and the young then develop from the eggs and are fertilized in the water. Other fish have internal fertilization, this means they mate. There are different stages where an offspring can be released; fertilized eggs, larvae, juvenile fish, or even sexually mature adults. Angler fish's eggs are normally very large, but very few are lain.