The Amazing Beauty of Baby Development - On Line -- ABbiology02-baby.html

The Amazing Beauty of Baby Development
Starting with Egg Fertiliaztion

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     Below we show the wonderful technology that comes into play when the cells in our bodies multiply, diversify, and form the trillions of daughter cells that make up the complex organs and systems of the mature body.
     We then show how, from the beginning of baby development, the reproductive cells form and develop separately from the body cells. Body cell replication is called mitosis. Reproductive cell replication is called meiosis. Replication in multiplying the reproductive cells goes one cell division further than in the body cells. The reproductive cells have half the normal number of chromosomes. The female eggs and male sperms each end up with one chromosome from each of the chromosome pairs in the parent. Human body cells have 23 pairs or 46 total chromosomes, the reproductive cells have 23 chromosomes.
     Reproductive cells always combine in fertilization to bring togther half the chromosomes from each parent to form a baby with the full number of chromosomes in each cell. The male sperm fertilizes the female egg, and the fertilized egg multiplys (and specializes) into all the wide variety body cells needed to develop a complete baby, and finally a complete adult.
     The wisdom, intelligence, and power involved in the reproduction and development of billions of humans babies all over the world must be awesome. From a technical and engineering point of view this process has amazing beauty. But what about the origin of this process? What profound kind of wisdom and power was involved in designing and creating this process in the beginning? And this process happens continuously in millions of different kinds of organisms daily throughout our world.
     Living systems and machines are infinitely more complex than anything human engineers and scientists have ever made or even conceived of. I hope that plain common sense will lead people to search for and discover the wise and reasonable Creator of such marvelous living technology. We have much to be grateful for, though we may not understand all the details.

meiosis and mitosis compared - comparison.gif

Click on Above Graphic to bring up more detail
Courtesy of www.accessexcellence.com

     Nowhere in our world can we find a better example for our Designer's wisdom, power, and beauty than in the way in which all organisms grow and reproduce themselves. Every living thing on our planet divides by the process of mitosis. Single cell organizms, like bacteria, reproduce by this fundamental method of cell division.
     Multicellular organisms, like humans, reproduce by sexual means through the process of meiosis to get the benefit of randomizing the genes in the DNA of both parents. Then that fertilized egg cell (zygote) continues to divide by mitosis. It develops into a fully mature adult as its multiplying cells diversify and specialize into the numerous and varied organs and living systems necessary for the adult to adapt and survive in highly competive and extremely stressful environments.
     Environmental stress guarantees that the designed-in variations of the DNA will perpetuate the best and the most healthy of the offspring. This designed, created and sustained genetic program for survival gives us a very wide assortment of genetic variations in the world of living organizms. It also weeds out those organisms that are no longer needed or not able to survive.

Click on Above Graphic Courtesy of http://anatomy.med.unsw.edu.au/	Click on Above Graphic Courtesy of http://anatomy.med.unsw.edu.au/	Click on Above Graphic Courtesy of http://anatomy.med.unsw.edu.au/
The Human Egg before Fertilization	The Human Egg after Fertilization and one cell division	The Human Egg after Fertilization and two cell divisions

Click on Above Graphic
The Human Egg being Fertilized followed by cell division to form the blastocyst. Link to National Human Genome Research Institute (NHGRI) http://www.nhgri.nih.gov/DIR/VIP/Glossary/Illustration/blastocyst.html

See Face Develop on Video - seaurchin.avi

Click to Download
Sea Urchin's Cells Dividing &
Multiplying into a blastocyst
with numerous cells
Courtesy of Stanford Univ Sea Urchin
Embryology and Paul Kulesa, Rockman Institute, Pasadena CA 91125 and link to: http://www.stanford.edu/group/Urchin/GIFS/

Courtesy of SPERM MOTILITY 3D - www.stanford.edu/group/Urchin/sperm-l.htm

Courtesy of SPERM MOTILITY 2D - www.stanford.edu/group/Urchin/spermmot.htm

The Biological Motor that Drives
the Sperm's Flagellum "Propeller"
Courtesy of http://reviewevolution.com - Motor - irreducible complexity

Irreducible Complexity: In "Darwin's Black Box", Michael Behe introduced the notion of irreducible complexity: "By irreducibly complex I mean a single system composed of several well-matched, interacting parts that contribute to the basic function, wherein the removal of any one of the parts causes the system to effectively cease functioning. " [page 39] In the "Origins of Species" Charles Darwin wrote: "If it could be demonstrated that any complex organ existed which could not possibly have been formed by numerous, successive, slight modifications, my theory would absolutely break down." [Sixth Edition, New York University Press, page 154]
The comples biological motor that rotates the sperm's tail (flagellum) is an irreducibly complex biological structure and cannot be built by "numerous, successive, slight modifications". The flagellum rotates like the propeller of an outboard motor and is a beautiful marvel of wise and powerful engineering.

Borrowed and modified from Irreducible Complexity - http://reviewevolution.com/irreducibleComplexity.php

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The Amazing Beauty of Baby Development - ABbiology02-baby.html