Paper called, The Human Embryo. Talks about all of the stages of pregnancy. Uses several sources to explain the changes that the baby goes through.

The Human Embryo In the United States al superstar there is an second-rate of some four star thousand thousand people born every twelvemonth (http://www.cdc.gov/nchs/releases/02news/womenbirths.html). In a normal maternalism the merciful embryo goes through a very complicated process. During the social club months of pregnancy the embryo develops both the basic things, such as the heart, liver, and brain, that it take to live in the outside world. A nine-month pregnancy is divided, by doctors, into trinity trimesters of equal length. During all(prenominal) trimester the baby goes through contrasting developments and continues to grow. The low gear trimester is considered the while from intention to 13 weeks. chip trimester takes place from week 13 through week 29. The concluding trimester is week 29 through delivery, which is usually 38-40 weeks after conception. Throughout a cleaning ladys lifetime, from puberty to menopause, she pull up stakes ovulate about(predicate) 400 times. To conceive a baby, the womans formal cadre moldiness be fertilized within 24 hours of when it was released. This, however, does not soaked the woman has to have sexual relation the day the ovum is released. sperm fuel last some(prenominal) days wrong the woman, so having intercourse even 4-5 days before ovulation can suit of clothes conception (Nilsson 31). Fertilization is the importee one sperm cell penetrates the ovum.

At that same spot the DNA of the mother and set up mix to form the communicable code for a sprout a new benignant being (http://www.Standupgirl.com). The sperm that penetrates the ballock controls grammatical gender. every unmanly egg contains one X chromosome. Every sperm either contains one X or one Y chromosome. To be a male one X and one Y chromosome must be present. To be female two X-chromosomes atomic number 18 present. At the moment of conception the gender is decided. From that point on it can not change. each of the time there is 50%... If you want to get a rich essay, order it on our website: Ordercustompaper.com

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