In the article, As toid by the egg by the author Susan Gaidos, the general subject matter/theme of the article is how reproduction occurs with an egg and a sperm to create new individuals. The main ideas which will be addressed in the article are how the egg and sperm reproduce, the challenges the sperm faces to get to the egg, how the egg and the sperm have evolved over time since originally the cells looked the same, proteins are involved in the reproduction, and a discussion on reproductive failure. In Biology class we are learning about protein synthesis and this article discusses protein that help with sperm and egg reproduction.
The article was mainly about how an egg reproduces with a sperm to create new individuals. The article also discussed how at one time the sperm and egg were the same. Over time, the sperm and egg have evolved to be different. The article mentions the challenges with the sperm being able to reach the egg. There is also a discussion about how the protein affects the reproduction and a discussion on reproductive failure.
The main concepts are how the egg and sperm reproduce, the challenges the sperm faces to get to the egg, how the egg and the sperm have evolved over time, and protein affects reproduction and reproductive failure. The outer shell of the egg has a sugary compound that allows the sperm to bind to the egg resulting sometimes in reproduction. The author says “Take for example, the conflicting needs of the egg and sperm during fertilization. Sperm are in a contest to win the race to the egg. Because they’re competing with each other, they need to get there and power their way in as quickly as possible. Eggs, on the other hand, don’t want to be rushed. Bombarded with tiny, l...
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... reproduction for understanding human reproduction, using computer programs and 3-D model. There has been a lot of research on how the egg binds with the sperm. The main evidence uncovered to support the main body of the article was observing the chicken reproduction to show how the egg was fertilized.
In summary, I have discussed how the sperm and egg reproduce to create new individuals. I have also described the challenges with the sperm trying to reach the egg to reproduce and how the egg only chooses the most optimal sperm for reproduction. Also, discussed how the protein affects reproduction and that they change over time since they are involved in reproduction. There is future research to gain more information on why there is sometimes reproductive failure. This new research will help a great deal in understanding why an egg and sperm cannot reproduce.
The testes produce sperm and sex hormones, testosterone. Surrounding each testis is a coiled tube called the epididymis, which collects and stores sperm, very much similar to that of a human. Before ejaculation a seminal fluid is added by the seminal vesicles, to prevent the sperm from drying out.
The chapter on fecundity addresses the bizarre ways that nature has evolved to ensure the continuity of a species. As the title suggests, fecundity deals with the fertility of species where Annie Dillard explores the inefficiency of fertility and the brutality of nature’s evolution. In the end, Dillard concludes that death is a part of life.
time. The female lays the eggs in a hole that is specifically made for laying the eggs. The
By the beginning of the 18th century, the theory of preformation was widely accepted and had become the dominant model of embryonic development. The research indicated, “This time period saw the beginning of the concept of emboîtement, meaning encasement: the idea that each offspring is contained pre-formed within the gonads of its parents” (Lawrence 2013). Nicolas Malebranche contributed to this theory and the model by creating a fully reasoned explanation of it based on the Cartesian principles of mechanism. Therefore, he was the first to declare that every life that would exist on earth was created at the moment of creation and that future members of each species were present in the ovary of the female. For example, this idea is often compared to the metaphor of the Russian nesting dolls with an infinite number of smaller dolls inside. During this period of time the ovist model of preformation, it was assumed that the seminal fluid from the male parent was only required to begin the process of growth in the preformed embryo. However, this theory was challenged by scientists that w...
“Second, eggs are retrieved through a minor surgical procedure that uses ultrasound imaging to guide a hollow needle through the pelvic cavity to
When doing her research, Martin made sure that nobody would have any room to criticize her credibility or the credibility of the article. The shear volume of research that she did is shown in the fact that there are over seventy end-notes in The Egg and the Sperm. Martin spent her time reading through endless biology books; from not as well known, to national best sellers like Molecular Biology of the Cell, written by Bruce Alberts. She also found (at the time of research) current material from...
An incision was made in the ovary to reveal the young. However, the offspring were not in at an advanced enough stage and appeared immature, like the image on the right-hand
A male makes one thousand new sperm per second, that is two trillion over a lifetime and they all are one of a kind, very unique. A woman has all her eggs from birth. The process starts out as meiosis, this is where 30,000 genes are then there are forty six chromosomes. Twenty three comes from your mother and twenty three come from your father, they only come together in meiosis in pairs, but they are not the same. Chromosomes make an exact copy of themselves then they condense making an X shape, chromosomes get a partner then embrace. The chromosomes cling close together in big chunks, the cell then divides pulling the pair apart with twenty three chromosomes. The cell alone is incomplete, but holds many promises. Every cell holds di...
Reproduction is the ability of a species to perpetuate and in the human species it is looked upon as a right in today's society. Males and females alike feel pressure that in order to be fully male or fully female they must procreate (Conrad, 1997). While this is not true of all men and women, for many married couples the ability to have children is important. It is only recently that infertile couples have been provided with options that would allow them to conceive a child. These options include the various forms of reproductive technology that have been developed over the past 20-25 years. While these technological advances have brought joy and hope to many infertile couples, the advances have also brought along a myriad of moral and ethical dilemmas as well. It is necessary for everyone to become educated about reproductive technology in order to be better equipped to deal with the moral and ethical issues that this new technology brings to today's world.
The merger of two germinal cells, one being a sperm cell and the other being an egg cell, is complete within twelve hours, at which time the egg is fertilized and becomes a zygote containing forty six chromosomes required to create a new human life. It is during this remarkable process when conception occurs. Conception confirms life and makes that undeveloped human one of a kind (Rorvik & Shettles, 1983, p. 16). Many researchers, as well as scientists, identify the first moments of life as the instant when a sperm cell unites with an ovum, o...
In the Great Egg Race transcript, takes place in a studio, in the 1970s making a TV Show of a game called the Great Egg Race. In TV Show there is competition between 3 teams, for which team makes the best machine that fires hocks over a rod. This transcript takes place between 2 participators in the game those are the same team members and 1 host, 2 participators are A & B and the host is
Martin, Emily. "The Egg and the Sperm: How Science Has Constructed a Romance Based on Stereotypical Male-Female Roles." Gender, Sex, and Sexuality. New York: Oxford University, 2009. 248-53. Print.
Inside the cells that produce sperm and eggs, chromosomes become paired. While they are pressed together, the chromosomes may break, and each may swap a portion of its genetic material for the matching portion from its mate. This form of recombination is called crossing-over. When the chromosomes glue themselves back together and separate, each has picked up new genetic material from the other. The constellation of physical characteristics it determines is now different than before crossing-over.
Reflecting on Meilaender’s reading procreation is defined as a loving act between spouses which prepares for a possible creation by God of a new person. On the other hand, reproduction is the process by which living things replicate, to assure the continuity of their generation with the assistance of human-made practices and todays new technologies. For example, artificial insemination, in vitro fertilization (Meilaender, 2013).
The female reproductive systems is made of 9 parts. The sex cell for the female reproductive system is called the egg or ovum. The egg spends it’s dormant life in the ovaries until it is released. The egg has 23 chromosomes within it. The ovaries have two goals: to create and house eggs and the release the female sex hormones, estrogen and progesterone. The fallopian tubes are what the egg travels through to reach the uterus. Fallopian tubes contain tiny hair-like structures called cilia; the cilia allows for mobility of the egg. The fallopian tube is roughly the size of 2 hairs, and is the site of where ectopic pregnancies happen. The process of the egg getting released from the ovaries through the fallopian tubes is called ovulation. Ovulation happens on the 14th day of the menstruation cycle The uterus is where the egg goes to after it travels through the fallopian tubes. The developing baby is held and nourished in the uterus. When the uterus is empty, it’s roughly the size of a fist but expands one an embryo starts to develop. The endometrium is the lining of the uterine wall. It’s used to protect the fetus. When the egg isn’t fertilized, menstruation ha...