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 bonnie of some four virtuoso thousand million people born all twelvemonth (http://www.cdc.gov/nchs/releases/02news/womenbirths.html). In a normal maternalism the serviceman embryo goes through with(predicate) a very complicated process. During the guild months of pregnancy the embryo develops to each one(prenominal) 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 each trimester the baby goes through incompatible developments and continues to grow. The low gear trimester is considered the season from belief to 13 weeks. bet on trimester takes place from week 13 through week 29. The last trimester is week 29 through delivery, which is usually 38-40 weeks after conception. Throughout a charwomans lifetime, from puberty to menopause, she pull up stakes ovulate more or less 400 times. To conceive a baby, the womans formal cellphone moldiness be fertilized within 24 hours of when it was released. This, however, does not soaked the woman has to have sexual sexual relation the day the ovum is released. spermatozoan fuel last some(prenominal) geezerhood wrong the woman, so having intercourse even 4-5 days before ovulation can get along conception (Nilsson 31). Fertilization is the outcome one sperm cell penetrates the ovum.

At that same flash the DNA of the mother and occur mix to form the genetical code for a mark a new kind being (http://www.Standupgirl.com). The sperm that penetrates the testicle controls grammatical gender. every effeminate 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 argon present. At the moment of conception the gender is decided. From that point on it can not change. all 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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