The science of reproduction

 The humans have  two different  systems that to reproduce. Women reproductive system The female reproductive system have:  Uterus, that is were the baby grows if they are a pregnancy.  The Fallopian tube is encharged of connect the ovary whit the uterus. The ovary is where the ovulum are created by the oogenesis and a women can only use one in all live. The vagina connect to exterior. The endometrium is encharged of feed the zigote is the women are pregancy but if no the endometrium detach of the uterus and that produce the period. Male  reproductive system    The male reproductive system have the penis that is a muscular ogan that in the interior have the urethra that is wher the sperm and the urine  secrets. The testes are encharged of make the gametes and this comunicate whit the urethra. The seminal vesicles are enchargged to make the liquid that helps to transport the spermatoids.

  The plants have two differents forms to reproduce one is whit flower and pollen and the other is by spores. Reproduction Whit flowers The pístil This is the female part of flower and have the pollen tube that conect whit the stigma of the flower and that connect wiht the exterior. The ovary that produce the ovule and the embrion sac that is where the zigote grows.   The stamen Is the male part of flower and have the pollen that makes that the ovule fertilizate and it need the help of other animal to make the pollen go to the stigma. 

 The endocrine system is enchareged to make some procces in the organisms. The subtances that produce are called hormones that are important to it.in reproduction the importants parts are the pitutary gland and the Hipotalamus that secret gonadotrophine and the pitutary gland secrets LH (Lutheus hormone) and FSH (Follicular Stimulate Hormone) that make that the ovulation in womens happen.    

The Cromosomes are the genetic information that are ubicated in a cell.  This are made whit proteins and Dna and there are a lot of differents chromosomes. All are different. How you can see the chromosomes is very rolled in itself. The Dna is rolled in the proteins.  All are different and are important because there are all of our information that indicates how make important procces like and important appearances like the color of eyes or the color of skin.  The Dna  The Dna is important to us. Have the information and our Dna at the most come of our father and mother thats the reason that we have characteristics of our parents. Some pairs are called genes. Have a form of double helix and is comformed by 4 important subtances Adenine, Thymine, Guanine and cytosine  and this four substances comform a the most the DNA  and at you can see in the representation the adedine only joins with the thymine and the same whit  the cytosine and the guanine. ...