In animals, the reproductive systems of representatives of different sexes of the same species are often very different (in contrast to other organ systems, which differ little in representatives of different sexes). These differences lead to the creation of new combinations of genetic material, which can lead to greater fitness of the offspring [1]. Some substances (hormones and pheromones) also play an important role in the reproductive system of animals [2]. The functioning of the reproductive system is regulated by the endocrine system of the body, which sets biological rhythms that are cyclical in nature with cycles of different periodization in different biological species. The end of the maturation of the reproductive system is chronologically timed to the maximum physical development of the individual.
In most vertebrates, the reproductive system has a similar structure plan: the gonads (gonads) - excretory ducts (vas deferens and oviducts) - external genital organs [3].
In one part of vertebrates - birds, fish, amphibians and reptiles - all or most of the maturation of the embryo occurs in the external environment, where the fertilized egg (egg, egg) gets. In this case, fertilization of an egg by a male can occur both inside the body of a female (in birds and reptiles), and in the external environment (in fish).
The organs of the human reproductive system are a special case of the reproductive system of placental mammals. They include both the gonads (testes (testes) in men and the ovaries in women), which produce germ cells, and the organs that carry these cells into the contact zone during copulation - the man's penis and woman's vagina, as well as the uterus, where it forms and matures embryo, fetus. Through the vagina, male reproductive cells enter the woman's reproductive system for fertilization, and through it the child is born. Diseases of the human reproductive system include congenital developmental disorders, including differentiation, as well as trauma and inflammation, including infectious
1) Miss Bennet and her family did all they could to make him comfortable. 2) Miss Bennet and her family did all they could to help him to get established in some way. 3) Their hospitality was of utmost importance to him. 4) He told Colonel Pope that he was out of a job. What he wanted was work and he wanted it badly. 5) The man thought that that everything would be all up with gim, if he had to go out of that room without a job. 6) He had never been on a bicycle in his life. 7) Mr. Wilmot did not exactly engage the journalist, but he forgot to discharge him. 8) Colonel Pope placed him in charge of the uptown rink. 9) One of the reasons why he got his ferst job was that he had been "willing to wash windows and scrub floors".
1) the only person the author knew in Boston was Miss Bennet. 2) Miss Bennet and her family received him warmly. it was of great importance to him because he had only six dollars. 3) the young man applied for a job to the Pope Company because when he published his first work "History of Western College Journalism" the Pope Company had given him an advertisement, and that seemed to be a "connection" of some kind. 4) Colonel Pope was then an alert energetic man of thirty-nine. He answered to the young man's story that they were laying off hands. 5) the man still hung on though he found out that the company was laying off hands because the man thought that everything would be lost for him if he didn't find a job. 6) Colonel asked him if he was "Willing to wash windows and scrub floors?". The man had to teach beginners to ride. He coped with it. 7) the man continued to work for Mr. Wilmot though he hadn't engaged him because he forgot to discharge him. 8) At the end of the week Colonel Pope placed him in charge of the uptown rink. 9) the young man was offered to edit a magazine. 10) it flashed through his mind that he could do anything he was put at. 11) his willingness to do any job had helped him to get his first job.
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Объяснение:
In animals, the reproductive systems of representatives of different sexes of the same species are often very different (in contrast to other organ systems, which differ little in representatives of different sexes). These differences lead to the creation of new combinations of genetic material, which can lead to greater fitness of the offspring [1]. Some substances (hormones and pheromones) also play an important role in the reproductive system of animals [2]. The functioning of the reproductive system is regulated by the endocrine system of the body, which sets biological rhythms that are cyclical in nature with cycles of different periodization in different biological species. The end of the maturation of the reproductive system is chronologically timed to the maximum physical development of the individual.
In most vertebrates, the reproductive system has a similar structure plan: the gonads (gonads) - excretory ducts (vas deferens and oviducts) - external genital organs [3].
In one part of vertebrates - birds, fish, amphibians and reptiles - all or most of the maturation of the embryo occurs in the external environment, where the fertilized egg (egg, egg) gets. In this case, fertilization of an egg by a male can occur both inside the body of a female (in birds and reptiles), and in the external environment (in fish).
The organs of the human reproductive system are a special case of the reproductive system of placental mammals. They include both the gonads (testes (testes) in men and the ovaries in women), which produce germ cells, and the organs that carry these cells into the contact zone during copulation - the man's penis and woman's vagina, as well as the uterus, where it forms and matures embryo, fetus. Through the vagina, male reproductive cells enter the woman's reproductive system for fertilization, and through it the child is born. Diseases of the human reproductive system include congenital developmental disorders, including differentiation, as well as trauma and inflammation, including infectious
2) Miss Bennet and her family did all they could to help him to get established in some way.
3) Their hospitality was of utmost importance to him.
4) He told Colonel Pope that he was out of a job. What he wanted was work and he wanted it badly.
5) The man thought that that everything would be all up with gim, if he had to go out of that room without a job.
6) He had never been on a bicycle in his life.
7) Mr. Wilmot did not exactly engage the journalist, but he forgot to discharge him.
8) Colonel Pope placed him in charge of the uptown rink.
9) One of the reasons why he got his ferst job was that he had been "willing to wash windows and scrub floors".
1) the only person the author knew in Boston was Miss Bennet.
2) Miss Bennet and her family received him warmly. it was of great importance to him because he had only six dollars.
3) the young man applied for a job to the Pope Company because when he published his first work "History of Western College Journalism" the Pope Company had given him an advertisement, and that seemed to be a "connection" of some kind.
4) Colonel Pope was then an alert energetic man of thirty-nine. He answered to the young man's story that they were laying off hands.
5) the man still hung on though he found out that the company was laying off hands because the man thought that everything would be lost for him if he didn't find a job.
6) Colonel asked him if he was "Willing to wash windows and scrub floors?".
The man had to teach beginners to ride. He coped with it.
7) the man continued to work for Mr. Wilmot though he hadn't engaged him because he forgot to discharge him.
8) At the end of the week Colonel Pope placed him in charge of the uptown rink.
9) the young man was offered to edit a magazine.
10) it flashed through his mind that he could do anything he was put at.
11) his willingness to do any job had helped him to get his first job.