Talk:2009 Group Project 5

From Embryology
Revision as of 17:32, 26 September 2009 by Z3126328 (talk | contribs)

Constructive criticism

--Mitchell Mathieson 09:32, 25 September 2009 (EST) I think the looks good. However, the information is very spread out all over the place, and there is a bit of irrelevant information, such as the anatomy of the frog. There also seems to be repeated information in the stages and timelines; such as having tables and text to say the same thing. There was a heavy emphasis on the stages of development (it pretty much takes up 3/4 of the page) which probably could have been done more succinctly. The formatting needs a bit of fine tuning (heading separated from their text, and gaps everywhere), but in general it is good; the information is quite useful and well written.

--Elide Newton 14:57, 26 September 2009 (EST)HELLO GROUP 5: Well done on your assignment. my one piece of advice on your assignment is all about improving the flow and purpose of your assignment. Firstly There needs to be a introduction to the frog. why the frog is used as a model for embryology? By understanding the stages of development and timeline of the frog we can study the frog as a model. Why it is a good model and our understanding can be linked to why is has been used in the past and why it is being used currently in the future. hopefully this introduction clarifies the purpose of your information, and gives an outline to what you will cover in the assignment. also there is lots of unimportant information in regards to this assignment which is clouding your purpose of timeline, stages, genetics, past, present and future research. with this introduction paragraph, stating what topics you will cover and how these fit into using the frog as a model for embryology, hopefully it will flow better. all the best!

--Jin Lee 16:32, 26 September 2009 (EST) congulatulation Group5. The assignment looks good however, if you can make some additions it will be even better. here is my suggestions: firstly the reference needs to be looked after. secondly some of sections are irrelevant(I found the 'anatomy of the frog' is irrelevant) and too much general information about frog. May be better to focus on the assignment cirteria. For the history section, information is lacking(it's too brief) may be trying to add some more details about the each in 1976, please mention which doctor you are reffering to. For the current research section, some more information needs. Overall, the assignment is visually well represented but may be concentrate on the main sections like timeline, stages, genetics, history and current research.

--Mark Hill 01:50, 8 September 2009 (EST) Still coming along, you have a lot of interesting pieces of information and some fair images. But how do the images relate to the text and where is the linkage? It is always easier to paste a whole lot of text information without interpreting what it actually means. Some of the information is good, tough some text also looks to be sourced without referencing. Overall the page lacks an integrated feel and structure.

--Mark Hill 08:45, 21 August 2009 (EST) This is a good start. It is important that the project page content/structure reflects what all members of the group have in mind. There should be a list of relevant references now on this discussion pages.

Background Reading

--Sadaf Masood 21:44, 8 September 2009 (EST) This link is for you Gary

--Gang Liu 15:18, 23 September 2009 (EST) hi could anyone tell me how to upload pictures on the main page. i'm trying to upload pictures from this link, into the last column of stages of frog embryo table. cheers!

Hey guys!!

I have only met one person in the group..and that was today in the lecture (3/08/09)

Still missing out on the third person here!

Lets decide on the animal guys before the lab!!!!


--Gang Liu 15:22, 16 August 2009 (EST)Hi all, I'm Gary and i've just enrolled into this subject mid-week last week. Will try to catch up with the group assignment and individual homework.

--Gang Liu 14:54, 19 August 2009 (EST)Hi group, since we are dividing the assessment. I would like to work on sections such as "The egg", "Fertilization", "Cleavage", "Gastrulation", and "Hand-drawing diagram". Thank you.

--Gang Liu 12:56, 20 August 2009 (EST)Hi all, Joe is working on the first six subheadings. And i'm happy to take whatever subheadings the rest of the group is not working on. Thank you.

--Gang Liu 14:07, 20 August 2009 (EST)Hi all, after this week's group dicussion in the lab, we split the tasks as the following:

  • Joe is responsible for subheadings such as egg, fertilization, cleavage, gastrulation, differentiation and growth;
  • Gary is responsible for subheadings such as anatomy of frog, timeline and stage(introduction), and abnormalities;
  • Sando is responsible for subheadings such as reproduction(male and female)+random subheading;
  • Sadaf is responsible for subheadings such as current research, genetics and glossary.

--Gang Liu 17:26, 23 August 2009 (EST)Hi all, should we mention Xenopus, part of frog family? --Gang Liu 09:29, 27 August 2009 (EST)Please ignore this line

--Gang Liu 18:00, 26 August 2009 (EST)Joe, thank you for updating our group page. Will upload my contents as soon as possible.

Hey guys, i need the list of words for the glossary or do u want me to pick them out myself? thanks!--Sadaf Masood 10:47, 27 August 2009 (EST)

--Gang Liu 11:24, 27 August 2009 (EST)Hi, sadaf, will upload my glossary by tomorrow. Thanks.

--Gang Liu 11:30, 27 August 2009 (EST)Hi group, i just realised there is no one doing history part. Is there anyone would like to take this part? Or else, i'll work on it. Let us know.

sick website

EGG: --Sando Rashed 18:17, 23 September 2009 (EST) as late as im posting this i havent had time this past week to upload my notes but im putting them up now

--Sando Rashed 18:18, 23 September 2009 (EST)Gastrulation of a frog embryology An invagination of cells that is found in the area of the embryo where it occupies the middle of the gray crescent, this is the beginning of gastrulation. This beginning is what creates the blastopore which in the future will become the anus, and a group of cells that would later on produce the notochord which will eventually become the backbone (also known as the speeman organizer). Stimulates the ectoderm to form neural tissue (rather than it forming skin), so it begins the staging of the neural folds, which eventually the tips of the folds will form the neural tube which will become the spinal chord and the brain. During gastrulation three layers start forming, these layers are known as the ectoderm, endoderm and the mesoderm. Layer Forms out of it

Ectoderm which may form the Brain, skin, spinal chord

Mesoderm which may form the Notochord, muscles, brain

Endoderm which may form the Inner lining of lings, bladder, thymus forms here.

--Sando Rashed 22:24, 23 September 2009 (EST)Cleavage = the repeated division of a fertilised ovum When the zygote nucleus forms the first cleavage forms, this nucleus undergoes a number of mitosis processes, a wrinkle forms down longitudinally passing the poles of the eggs where the sperm enters. This is how the egg is split up into two halves and this process is what forms the 2-cell stage. The process of the second cleavage is the process that allows the 4-cell stage to occur, the wrinkle runs through the poles at right angles instead of running through it longitudinally. The 8 stage cell is formed during the third cleavage it cuts across horizontally but it cuts through closer to the animal poles rather than the vegetal poles. As cleavages continually occur a 16 and 32 cell embryo are formed, and as these cleavages continuously occur the cells closer to the animal poles divide more rapidly and in more numbers compared to the vegetal pole. Eventually with all these cells continuously forming the blastula forms and a blastoseal which is a fluid filled cavity forms within it (no growth of the embryo has formed). --Sando Rashed 23:06, 23 September 2009 (EST)Anatomy of a Frog

The anatomy of a frog has many specialized features that are unique to the frog to help them live in their environment, they have long sticky tongues that help with them to grab food, they have specialized bones in the legs to help them jump. When under water frogs are able to breathe through their skin, the oxygen is able to diffuse straight into the blood through the pores on the skin; they also have lungs that allow them to breathe on land. In frogs they have 3 valves instead of the 4 valves in humans, they have one ventricle and two atria’s, the spiral valve does not allow blood with oxygen to mix with blood that has no oxygen. Frogs are able to listen to sounds that have a low pitch through their skin as well as hearing sounds with a high pitch through their ears.

The Egg

The egg of a frog is approximately 1.6 million times larger than a normal frog cell. While all the embryological development is occurring through time it will eventually become a tadpole. The egg can be divided into three different regions, the top part of the egg is known as the animal pole, the bottom half of the egg is known as the vegetal pole and a segment between the animal and vegetal pole is known as the gray crescent.--Sando Rashed 10:09, 24 September 2009 (EST)


This occurs once the sperm cell has inserted, following the insertion of the sperm cells meiosis II is completed, there is a 30 degree position change of the cytoplasm, gray crescent allows this change to be visible in some amphibians, the gray crescent is able what determines the expect ted outline of how the frog will form. The sperm cell joins with the nuclei of the egg which forms the diploid zygote nucleus. --Sando Rashed 10:09, 24 September 2009 (EST)