1 / 9

Embryogenesis

Embryogenesis. Kasey Alff and Jackie Schwartz. What is it?.

alijah
Download Presentation

Embryogenesis

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Embryogenesis Kasey Alff and Jackie Schwartz

  2. What is it? • Embryogenesis is the process inwhich the embryo is formed and then developed. It then develops into a fetus. Embryogenesis starts with the fertilization of the ovum, or egg, by sperm. The fertilized egg is often called a zygote. The zygote undergoes rapid divisions with not a lot of growth and cellular differentiation. This leads to a embryo being developed.

  3. Mitosis stages • 1. Interphase-DNA has replicated, but has not formed the condensed structure of chromosome. They remain as loosely coiled chromatin . • The nuclear membrane is still intact to protect the DNA molecules from undergoing mutation. • 2. Prophase- The DNA molecules progressively shorten and condense by coiling, to form chromosomes. The nuclear membrane and nucleolus are no longer visible. • The spindle apparatus has migrate to opposite poles of the cell. • 3. Metaphase- • The spindle fibers attach themselves to the centromeres of the chromosomes and align the chromosomes at the equatorial plate.

  4. 4. Anaphase The spindle fibers shorten and the centromeresplits. The separated sister chromatids are pulled along behind the centromeres.　 • 4.Telophase- The chromosomes reach the poles of their respective spindles. Nuclear envelopes form before the chromosomes uncoil. The spindle fibers then start todisintegrate. • Cytokinasis- It is the last stage of mitosis. Cytokinasisis the process of daughter cells being split apart.. Each daughter cell has the same number and quality of chromosomes.

  5. Impact of embryogenisis • You need embryogenesis because you want to be able to tell when you can have an ultra sound to find out the sex of the baby and make sure the baby doesn’t have any problems or diseases.

  6. Cell cycle

  7. Embryogenesis is found in both plants and humans • Human embryogenesis is the process of cell division and cellular differentiation of the human embryo. It occurs during early stages of development. Human development is a continuum. It starts with the germ cells in fertilization. Then through the prenatal development and then the growth to adulthood. The germinal stage, ovum before fertilization, through the development of the early embryo and up until implantation.

  8. stages

  9. Works cited • http://embryology.med.unsw.edu.au/wwwhuman/Stages/CStages.htm • http://classes.biology.ucsd.edu/bild10.SP07/BILD10%20week%202.pdf • http://www.cals.ncsu.edu/course/ent425/tutorial/embryogenesis.html

More Related