The Sperm and the Egg

Beginning with millions of sperm cells sniffing their way to an egg in the fallopian tube, the process of fertilization has begun. After a perilous journey, one lucky sperm cell burrows into the ovum, making it a zygote. Once the ovum becomes a zygote, two important developments commence. The zygote moves from the fallopian tube and down into the uterus, where it will attach to endometrium wall. Simultaneously, the cells are combining their sets of 26 chromosomes, together

One common perception of nature is that it is something raw, untouched by human civilization. This point of view suggests that humans are completely separated by nature and that our cultures and technologies are in some way unnatural. However, I believe that not only are we a part of nature, but our cultures are also deeply entwined with how we view nature. In this paper, I will review Emily Martin’s The Egg and the Sperm: How Science Has Constructed a Romance Based on Stereotypical Male-Female Roles as well as Michael Pollen’s Why ‘Natural’ Doesn’t Mean Anything Anymore in order to examine how nature, culture, and power relate with each other. Martin asserts that gender stereotypes affect biologists’ description of the natural world, particularly in the human reproduction process. Pollen makes a case that nature in fact lacks any meaning yet is often used as strong rhetoric. I argue that nature is constructed through cultural values and is used for rhetorical purposes, which shows that people manipulate facts in order to gain authority.

To make a human being you either need two X chromosomes or one X and one Y. That is why

Answer: out of 46 chromosomes, 44 are autosomal. The remaining 2 chromosomes are sex chromosomes. Chromosomal disorder Down syndrome/ trisomy 21: having an extra chromosome for the 21st pair causes Down syndrome. This here would be sex linked because your sex chromosomes are the ones who determine if you are to have the disorder. Also because your parents are the ones who are passing their chromosomes and those sex chromosomes are what makes you.

When a child is born you're either a boy or a girl . girls get a X chromosome from your mom and dad . a boy gets an X chromosome from mom and Y from your dad . if a girl gets that bad X chromosome from the mom and a good one from the dad it will be ok but if you get a bad one from mom then a Y-chromosome from

When sperm fertilizes an egg, conception occurs. For conception to occur the sperm and egg must meet. This is a story about how Bob, the sperm and Mary, the egg meet for the first time. The moment Bob and Mary come together a new individual is formed. Mary's was produced at the time she was in a fetus's ovaries. It has been over 23 years since she and five million others like her were produced. It is an exciting day for Mary because unlike all the others she was chosen to meet Bob. Bob also feels awesome today because unlike all the other millions of sperm discharged, he was the only one that made it to the finish and met Mary. The beginning of Bob and Mary's story starts when they

During sexual intercourse sperm is ejaculated from the penis and into the vagina. The sperm swim through the cervix and uterus, then finally into the fallopian tubes looking for an ovum to fertilize. After approximately 24 hours the ovum will be fully fertilized. For the next three days the zygote will move down the fallopian tube, growing and dividing quickly. When the zygote reaches the uterus it will attach itself to the endometrium and the pregnancy will begin.

was found to be packed into chromosomes, of which 23 pairs existed in each cell

Bringing a child in this world is a wonderful thing, so I heard but sometimes the process is not that easy. My mother, Aldoria Moseley, experienced some bad times. She told me it was all worth it to bring in this world, a healthy eight pounds, and twenty-two inches’ baby girl. My mother didn’t know she was pregnant until three months in her pregnancy. My parents had stop trying to have kids after having two boys, my brothers Nate and Cletwain. Things all change once my family found out they were having a girl.

This genetic material is found in the centre structure (known as the nucleus) of a cell. The human body is made up of millions of cells, in each cell there are 46 chromosomes - half from the mother and half from the father. out of the 46 chromosomes there are 23 pairs, one of these pairs - pair number 23 - are the sex chromosomes which determines the infants sex - XX female, XY male. The other 22 pairs are known as autosomes. These pairs are known as homologous chromosomes since they contain genes for the characteristics which are the same size and length. Gametes - sex cells - only contain one chromosome from each homologous pair, hence contain the haploid number (N).The allele - different versions of the same gene - pair for each characteristics is called the genotype, whereas the physical expression of the allele is the phenotype. Some alleles are dominate and some are recessive, the dominate gene always gets past on. A genetic disorder is a disease or condition caused by an absent or detective gene or a chromosomal aberration such as Down syndrome. - Reference

The presence of an extra chromosome is prevalent in plants but rare in animals. Diploid human cells contain 46 chromosomes, 44 autosomes and two sex chromosomes namely XX in females and XY in males. At mitotic metaphase, each of the chromosomes can be recognized by its size, shape and banding pattern. However, there could be non-disjunction of chromosomes during the process of meiosis, and as a result, one of the cells may receive an extra copy of the chromosome resulting in a condition called trisomy. One of the most common chromosome abnormality in humans is Down Syndrome, a condition associated with an extra chromosome 21. This condition was first described by British physician, Langdon Down (Web. Down Syndrome, n.d.).

In sexual reproduction, chromosomes can sometimes swap sections during the process of meiosis (cell division), thereby creating new genetic combinations and thus more genetic

The eggs are then extracted after approximately one-two months of medication. Afterwards, the eggs and the sperm from the husband are then allowed to fertilize to create embryos – preferably without assistance – in a medical laboratory for three to five days before being placed back into the uterus of the wife. The quality of the eggs will determine how long they are left to fertilize; however, the longer they are able to fertilize, the better the chances of a pregnancy. Once the embryos are placed back into the woman’s uterus, it will be up to her body to either accept or reject the embryos and become pregnant.

Human beings have 23 pairs of chromosomes. Among them, 22 pairs of chromosomes are called autosomes, which are same in both males and females, and one pair of chromosome is called sex chromosomes, X and Y. Females have two X chromosomes. Males have one X chromosome and one Y chromosome. Turner syndrome is a kind of chromsomal genetic disease, which occurs in sex chromosome. Turner syndrome patients are absent of all or part of the second X chromosome. “It was firstly discovered by Dr. Henry Turner and named after his name” (Kelly, 2013, p. 818). Turner Syndrome is the second most common genetic disease. The incidence is about about 1 in 2,500 newborn girls worldwide.The actual percentage may be higher, some affected fetals even can not survive

Scientifically at the moment when a human sperm penetrates a human egg, a new entity comes into existence. "Zygote" is the name of the first cell formed at