Male v day gifts
This article is about the male sex. For the capital of Maldives, see Malé. It also male v day gifts for the planet Mars and is the alchemical symbol for iron. A male organism cannot reproduce sexually without access to at least one ovum from a female, but some organisms can reproduce both sexually and asexually.
In humans, the word male can also be used to refer to gender in the social sense of gender role or gender identity. The existence of separate sexes has evolved independently at different times and in different lineages, an example of convergent evolution. The evolution of anisogamy led to the evolution of male and female function. The symbol is identical to the planetary symbol of Mars. It was first used to denote sex by Carl Linnaeus in 1751. The symbol is sometimes seen as a stylized representation of the shield and spear of the Roman god Mars.
In addition to its meaning in the context of biology, male can also refer to gender or a shape of connectors. Males can coexist with hermaphrodites, a sexual system called androdioecy. They can also coexist with females and hermaphrodites, a sexual system called trioecy. Photograph of an adult male human, with an adult female for comparison. The sex of a particular organism may be determined by a number of factors. These may be genetic or environmental, or may naturally change during the course of an organism’s life.
The part of the Y-chromosome which is responsible for maleness is the sex-determining region of the Y-chromosome, the SRY. In some species of reptiles, such as alligators, sex is determined by the temperature at which the egg is incubated. Other species, such as some snails, practice sex change: adults start out male, then become female. In many arthropods, sex is determined by infection with parasitic, endosymbiotic bacteria of the genus Wolbachia. This article may require cleanup to meet Wikipedia’s quality standards. Male animals evolved to utilize secondary sex characteristics as a method of displaying traits which display fitness, which is believed to be the product of sexual selection.
