Is It Better To Replace A Differential Egg Or External Fertilization?

4. There are definitely some advantages to this method over Internal Fertilization. In External Fertilization, more offspring’s can be produced at once due to a large number of eggs being fertilized at once. Additionally, in External Fertilization, it is easier to find mates since any fish can come along and fertilize the eggs. The eggs can be fertilized even if the area where the eggs were laid did not have any male fish since the eggs can be carried by strong currents or other animals to another area. Also as stated before, there is higher genetic variation due to there being multiple sources of sperm. Moreover, the eggs do not require special structures to protect them (ex: placenta) and likewise, the fertilized eggs are protected from environmental

In terms of survival, I believe that the Internal Fertilization is better than External Fertilization and this is mainly because of the low success rate in External Fertilization. There is a low success rate because as the sperm is released into the water to fertilize the egg, the sperm might not make it to the egg. In fact, many of the sperm die before they reach the egg. Likewise, even if an egg is fertilized, it may be destroyed if an animal eats it or due to other environmental reasons such as temperature or Ph level. Furthermore, the eggs in External Fertilization do not have a coating to cover them and keep them safe from air exposure. Additionally, due to the fact that the parent does not care for its young even after it has hatched out of its egg, the fish becomes vulnerable to other predators eating it. On the other hand, in Internal Fertilization (within humans), the foetus is protected at all times due to it being within the womb of the mother surrounded by a placenta. This keeps it safe from outside predation. In Internal Fertilization in humans, there is a higher chance the Sperm and Egg will meet since there is a relatively short distance between the Egg and Sperm and also because the sperm is within an enclosed area. Furthermore, in Humans, mates become more selective and can be chosen instead of in bony fish where many multiple male fish release their semen onto the eggs. This selective mating could be a good thing because it decreases the chance of

The heart is a organ within the fish which is very muscular and its job is to pump blood throughout the body of the fish. It is located behind (and below) the gills. In bony fish and in many other fish however; there are only two chambers within the heart. They are the Atrium and the Ventricle with the Atrium being the one that receives the blood and the Ventricle the one that pumps the blood. The reason fish hearts are like this is because circulation within the fish goes in one direction only whereas in humans it goes in two directions. Essentially what occurs is de-oxygenated blood comes from the body of the fish through veins and accumulates in the sinus venosus (a chamber like area which initiates contractions) and then enters the atrium of the heart. Then the blood is pumped into its Ventricle and then as the Ventricle contracts, blood is pumped into the bulbus arteriosus (a tube) which has some functions such as decreasing the blood pressure as to protect the Gills from damage. The blood then goes into the Aorta from which is travel to the Gills. As the blood travels through the many capillaries present within the Gills, gas exchange occurs and then the oxygenated blood goes to the rest of the body’s cells through