male
The sex of an animal compared with a male (a male, a male) female.
It is used in nonhuman animal and is equivalent to a human man mainly.
In an animal, I say an individual creating sperm.
"♂" which modelled a spear and a shield as a sign is used (it is a mistake to express a male caliber).
Because competition is much smaller on a female egg to make, as for the male sperm to grow, there is little energy to make it markedly.
Therefore, in comparison with the number that females form an egg, it is custom that there is many in the number that a male makes sperm markedly.
In other words the male sperm to grow is the fate that most are wasted.
On the other hand, variation is easy to happen (evolution theory more neutral than the theory of evolution, the frequency of the base sequence substitution error of the argininosuccinic acid synthetase pseudogene experiment).
Because essence of the nature is the joining type of the gamete, I judge the distinction of the nature (male and female) of the individual by a reproduction nest.
However, there is many it when I can be distinguished in a part except it.
If there is it when I can be distinguished by the structure of the sex organs except the reproduction nest, and I am female, and structure (penises) to transfer sperm develops in the case of a thing performing entosomatic fertilization in particular, the distinction is easy.
The difference of reproduction nest in itself is called primary sexual characteristics and calls a form and essence to show sex differences except it secondary sex characteristic.
When clear sex differences are seen in the all parts of the body except a reproduction nest / the sex organs, there is it.
For example, it is structure used on the occasion of structure for childcare and a mating action.
Such sex differences are called secondary sex characteristic, too.
In addition, I call the thing which can be distinguished of the male and female with 2 type of the nature in particular so that it is seen clearly.
When, for example, structure for mating expresses an ornamental feather and a beautiful color when I act on mating, there is the thing that this is called nuptial coloration.
There are many things which the distinction hardly sticks to other than the thing which does not become clear, the breeding season of sex differences in particular.
But I use a word of the secondary sex characteristic to point at an organ and genitalia attached to the sex gland, and there can be the third sex character and the thing calling it when I arrive besides these.
It is used in nonhuman animal and is equivalent to a human man mainly.
In an animal, I say an individual creating sperm.
"♂" which modelled a spear and a shield as a sign is used (it is a mistake to express a male caliber).
Because competition is much smaller on a female egg to make, as for the male sperm to grow, there is little energy to make it markedly.
Therefore, in comparison with the number that females form an egg, it is custom that there is many in the number that a male makes sperm markedly.
In other words the male sperm to grow is the fate that most are wasted.
On the other hand, variation is easy to happen (evolution theory more neutral than the theory of evolution, the frequency of the base sequence substitution error of the argininosuccinic acid synthetase pseudogene experiment).
Because essence of the nature is the joining type of the gamete, I judge the distinction of the nature (male and female) of the individual by a reproduction nest.
However, there is many it when I can be distinguished in a part except it.
If there is it when I can be distinguished by the structure of the sex organs except the reproduction nest, and I am female, and structure (penises) to transfer sperm develops in the case of a thing performing entosomatic fertilization in particular, the distinction is easy.
The difference of reproduction nest in itself is called primary sexual characteristics and calls a form and essence to show sex differences except it secondary sex characteristic.
When clear sex differences are seen in the all parts of the body except a reproduction nest / the sex organs, there is it.
For example, it is structure used on the occasion of structure for childcare and a mating action.
Such sex differences are called secondary sex characteristic, too.
In addition, I call the thing which can be distinguished of the male and female with 2 type of the nature in particular so that it is seen clearly.
When, for example, structure for mating expresses an ornamental feather and a beautiful color when I act on mating, there is the thing that this is called nuptial coloration.
There are many things which the distinction hardly sticks to other than the thing which does not become clear, the breeding season of sex differences in particular.
But I use a word of the secondary sex characteristic to point at an organ and genitalia attached to the sex gland, and there can be the third sex character and the thing calling it when I arrive besides these.