What is gamete?
In the process of conception of a new organism participatecells called gametes. Let us consider in more detail what a gamete is. Gameta is a reproductive cell that takes part in reproduction. After the combination of gametes, a zygote is formed, which subsequently develops into an individual that bears the signs of the parents' organisms. Certain living creatures produce only single gametes. This phenomenon is called parthenogenesis.
Properties of gametes
The morphology of gametes is very diverse, the cells produced differ according to the following characteristics:
- chromosomal set,
- value,
- mobility.
Fused gametes can have the same morphological characteristics. In this case, they are considered as asexual cells. They are characterized by mobility and can have an amoeboid shape.
Isogamy - no difference between female and femalemale gametes, is characteristic of many plants. Opposite to it anisogamy, in which the gametes differ in their size, as well as the degree of mobility. Female sex cells are usually immobile macrogametes, and male microgametes have flagella.
Principle of Oogamy
In mammals, the principle of oogamy is traced: the gametes of this biological type capable of combining sharply differ in their size and degree of mobility:
- mobile men's cells are called spermatozoa;
- female gametes of large size are called ovules.
This difference is due to the presence in the egg cell of the necessary nutrients that the zygote needs to divide.
You may also be interested in our article. What is a zygote.
