Genetic variation allows for a greater chance of a population surviving. For example, if a plant species acquires a disease, without genetic variation the disease would just keep getting passed on to the next identical organism and the population would decline and eventually die. But genetic variation prevents that from happening, because you have so many other species in the ecosystem, and genetic variation is a product of sexual reproduction meaning that the offspring of the diseased plant has a possibility of not inheriting the disease.
Generalizability is the process by which conclusions are drawn from a group of research results to create a scientific theory which is statistically probable. The conclusions drawn for example, from a study of a specific group in society can then be applied to a larger population to make a general conclusion. This can have issues based on the variables such as age, gender, location, which may provide less scope for the results; therefore if the study is not taken of a large enough cross-section of results, then it makes the generalizability limited.
The structure of the mature sperm contains a tail, middle section having mitochondria and a head part. The tip of the head part contains <u>acrosome </u>and nucleus. The sperm at maturity, contains a cap like structure at the anterior end. It is termed as acrosome. In this structure, enzymes are present which help the sperm to penetrate into the egg for fertilization. The acrosome allows the plasma membranes of both the cells to fuse and fertilization takes place.
The official term is a megaflash :)