If you want to answer that's cool, if not please don't post. Try to answer honestly and not to look any information up. Just fill it out with what you currently know / think you know.
Interview Protocol--Revised Draft
PURPOSE
The purpose of this interview is to investigate learners' ideas regarding what happens when an egg is fertilized and an embryo develops. Interviewees will be asked to consider both egg-laying species (using a chicken egg as a prop) and mammalian species. They will be asked to describe what they think happens during the development of an embryo and to talk about what they think is necessary for successful gestation.
INTRODUCTION
"I would like to ask you a few questions about eggs develop into chicks. I just want to understand your thinking when I ask you about this topic. Is it ok for me to tape record your answers so I can remember what you said?"
QUESTIONING PATTERN
Demonstration: Present interviewee with a chicken egg and bowl.
1. What do you think is inside the egg?
2. [Allow interviewee to crack egg after answering #1] Why do you think the yellow stuff is in the egg? Is the yellow stuff the chick? What about the other stuff?
3. How about that white stringy stuff?
4. What about that white spot on the yellow stuff?
5. We know that eggs come from chickens, so why do you think breakfast eggs from the store don't grow into chicks?
6. Do you think they could? Why/Why not?
7. Can you describe how you think an egg becomes a chick?
8. Why do you think so?
9. What do you think a chick needs to grow inside the egg?
10. How do you think the growth of a chick inside an egg compares to a human child in the womb?
11. What do you think they have in common?
12. What do you think are important differences?
13. Do you think it's important to study what happens to young organisms as they grow?
14. Why/ Why not?
15. How do you think this subject relates to you?
CONCLUSION
Based on what you've told me, what do you think are the most important things needed for a fertilized egg to develop into a life form that can live on its own?
1. What do you think is inside the egg? The white is the nutrients, the yellow is the actual egg of the potential chicken... I think?
2. [Allow interviewee to crack egg after answering #1] Why do you think the yellow stuff is in the egg? Is the yellow stuff the chick? What about the other stuff?
the yellow is the portion of the chicken before fertilization.. the white is the nurtrients the chick will need to grow.
3. How about that white stringy stuff?
Used to seal small cracks in the egg.. protective coating, etc? I dunno.
4. What about that white spot on the yellow stuff?
Never saw a white spot on the yellow stuff.
5. We know that eggs come from chickens, so why do you think breakfast eggs from the store don't grow into chicks?
They do.. they're just gathered before being fertilized by the rooster.
6. Do you think they could? Why/Why not?
They could.. again, no roosters aroudn to fert. them.
7. Can you describe how you think an egg becomes a chick?
A roosters gets his stuff all over the eggs.. which goes through the semi-soft shell and penetrates the yellow stuff. Thus, a chick is started.
8. Why do you think so?
f'ing a. stupid questions are annoying me.
9. What do you think a chick needs to grow inside the egg?
The white stuff, nutrients, and warmth.
10. How do you think the growth of a chick inside an egg compares to a
human child in the womb?
There is no physical attachment of the egg to the carrier.. the egg is seperate from the body.. a human child has a direct link to the body of the mother.
11. What do you think they have in common?
They both require a male to become human!! 12. What do you think are important differences?
hmm.. an egg shell outside the chicken and a child being carried within the mother.
13. Do you think it's important to study what happens to young organisms as they grow?
sure.. why not?
14. Why/ Why not?
oh you're just pissing me off now.. development leads to concludsive evidence of evolution.
15. How do you think this subject relates to you?
I was born from my mother.. after Tomsmart potentialy impregnanted her. It's either Tom or the guy I call dad to be my dad nowadays.
Let's see if I can remember high-school biology...
1. What do you think is inside the egg?
Depending on it's stage of development, either an egg yolk and the fluids surrounding it ('the white') or an embryo.
2. [Allow interviewee to crack egg after answering #1] Why do you think the yellow stuff is in the egg? Is the yellow stuff the chick? What about the other stuff?
The yellow stuff is the egg yolk. The egg yolk is the nutritive part of the egg. All the energy and compounds an embryo needs to develop are located here. I'm not sure, but I think the white fluid contains anti-bodies and cushions/moisturizes the embryo during development.
3. How about that white stringy stuff?
The stringy stuff keeps the yolk in place (in the middle)
4. What about that white spot on the yellow stuff?
That's the egg cell or an embryo in the very early stages of development.
5. We know that eggs come from chickens, so why do you think
breakfast eggs from the store don't grow into chicks?
The chickens laying store-bought eggs are not fertilized. Unfertilized eggs do not develop.
6. Do you think they could? Why/Why not?
Yes, unless the chicken has gone through significant gene modification.
7. Can you describe how you think an egg becomes a chick?
The egg cell grows and divides (using the yolk as 'fuel').
8. Why do you think so?
That's what they taught in school. And it makes sense, I guess.
9. What do you think a chick needs to grow inside the egg?
All that the egg contains plus a constant temperature favorable to cell growth.
10. How do you think the growth of a chick inside an egg compares to a human child in the womb?
The basic process is much the same(cell division, specialization), except the yolk is many many times smaller as the embryo is connected directly to the parent (feeds directly from the parent). The egg itself becomes superfluous as all of it's functions are carried out by the body of the parent.
11. What do you think they have in common?
See above
12. What do you think are important differences?
See above
13. Do you think it's important to study what happens to young organisms as they grow?
I guess. :?
14. Why/ Why not?
Why study anything? Besides the clear practical aspects (safer pregnancies/increased egg production) the unquenchable thirst for knowledge is modus operandi for humanity.
15. How do you think this subject relates to you?
Not really.
CONCLUSION
Based on what you've told me, what do you think are the most important things needed for a fertilized egg to develop into a life form that can live on its own?
An isolated(safe) environment and an adequate supply of the proper substances.
Is there anything you'd like to add?
1. What do you think is inside the egg?
Unknown. The Shell is calcium carbonate.
2. [Allow interviewee to crack egg after answering #1] Why do you think the yellow stuff is in the egg?
yolk
Is the yellow stuff the chick?
No. Probably not.
What about the other stuff?
Can you be more specific?
3. How about that white stringy stuff?
thick albumin (the more fluid is thin albumin)
4. What about that white spot on the yellow stuff?
blastodisc
5. We know that eggs come from chickens, so why do you think breakfast eggs from the store don't grow into chicks?
Haven't been fertilized
6. Do you think they could?
Not the way they've been processed, no. Unless one is asking the question with the knowledge it is unclear exactly what contributes to a female, i.e. Z and. . .(Males are ZZ)?
Why/Why not?
Again, processing and handling makes this impossible
7. Can you describe how you think an egg becomes a chick?
Basically, and egg is fertilzed. . . lots of cell division. . . I forget this part
8. Why do you think so?
Generally accepted.
9. What do you think a chick needs to grow inside the egg?
Supplied by the yolk and albumin (food and antibodies, ect)
10. How do you think the growth of a chick inside an egg compares to a human child in the womb?
Metaprinciples apply. Meosis, mytosis, all that jazz. A chick gets its immune system from the yolk. . a human fetus gets his directly from the mother's blood supply (and later colustrum)
11. What do you think they have in common?
Already asked and answered
12. What do you think are important differences?
[/i]Already asked and answered[/i]
13. Do you think it's important to study what happens to young organisms as they grow?
Of course
14. Why/ Why not?
Er. . . Why? To better understand the process in order to nurture healthier, more robust offspring, to put in generically. Also, to give the biologists/botanists/geneticists something to study.
15. How do you think this subject relates to you?
[i] What subject is this? As far as chickens go, I really don't think it relates to me at all. Speaking of children developing-- As a parent, it's very relevant
A fertilized egg need proper care (by a parenting figure) in order to develop into a healthy offspring.
What's wrong with Mountain Oysters? They're yummy.
Ovulation and Egg Assembly in Chickens:
The egg is formed in the mature hen by a reproductive system composed of an ovary and oviduct. Most females have two functional ovaries, but chickens and most other birds have only one ovary and one oviduct. In this oviduct, all parts of the egg, except the yolk, are formed. It is divided into five distinct regions: (1) infundibulum or funnel, (2) magnum, (3) isthmus, (4) uterus or shell gland, and (5) vagina.
The yolk is formed in the follicular sac by the deposition of continuous layers of yolk material. Ninety-nine percent of the yolk material is formed within the 7-9 days before the laying of the egg. When the yolk matures, the follicular sac ruptures or splits along a line with few, of any, blood vessels. If any blood vessels cross the stigma, a small drop of blood may be deposited on the yolk as it is released from the follicle. This causes most blood spots in eggs. After the yolk is released from the follicle, it is kept intact by the vitelline membrane surrounding it. The release of the yolk from the ovary is called "ovulation."
After its release from the follicle, the yolk falls into the hen's abdominal cavity. The infundibulum of the oviduct quickly engulfs the yolk with its thin, funnel-like lips. The yolk quickly enters the magnum section of the oviduct where the dense portion of the albumen is added. The shape of the egg is largely determined in this section.
The magnum of the oviduct is divided from the isthmus by a narrow, translucent ring without glands. The isthmus is smaller in diameter than the magnum. It is here the two shell membranes form. The shell membranes loosely contain the yolk and dense white until the rest of the albumen is added in the uterus.
The shell is added in the uterus or shell gland portion of the oviduct. The shell is composed mainly of calcium carbonate. It takes about 20 hours for the egg shell to form. If the hen lays brown eggs, the brown pigments are added to the shell in the last hours of shell formation.
The chalazae, two cord-like structures which keep the yolk centered in the egg, first appear in the uterus. The chalazae also function as an axis around which the yolk can rotate and keep the germinal disc in hatching eggs uppermost at all times.
In the last portion of the oviduct, the vagina, a thin, protein coating called "bloom" is applied to the shell to keep harmful bacteria or dust from entering the egg shell pores. The egg passes through the oviduct small end first, but is laid large end first. In the vagina, the egg is turned horizontally just before laying. If the hen is disturbed on the nest, the egg may be prematurely layed small end first. "Oviposition" is the act of pushing the egg from the oviduct.
When an egg is laid, it fills the shell. As it cools, the inner portion of the egg contracts and forms an air cell between the two shell membranes. A high quality egg has a tiny air cell, indicating the egg was collected soon after being layed and was stored properly. The air cell is usually located in the large end of the egg where the shell is most porous and air can enter easily.
What embryos need to survive--Handling the egg:
Proper care of fertile eggs prior to incubation is essential for success. The eggs should be collected within 4 hours from when they were laid. Never wash the eggs unless absolutely necessary. Then use water warmer than the egg so the egg sweats and releases the dirt. If you use cold water, the egg will contract and pull the dirt and bacteria deeper into its pores.
If it is necessary to store fertile eggs before setting, store small-end down at a temperature of 50°F to 65°F. Cell division can begin if temperatures exceed 82°F. Refrigerators can be used to store eggs only if room temperatures exceed 80°F. Modern frost-free refrigerators can dehydrate eggs stored more than a couple of days. Never store eggs more than 10 days after the eggs are laid. Hatchability drops quickly if they are stored for more than 10 days.
The primitive streak will become evident at about 16 hours of incubation. Blood islands start to form at 24 hours and heart starts to beat at 42 hours. Limb buds begin to form at 62 - 64 hours.
Morphogenesis, or organogensis, lasts for the remainder of embryonic development and is concerned with the development of shape and morphology of organ systems and the entire animal typical of the adult. At the start of morphogenesis the embryo has three germ layers, three compartments, a gut and a neural tube. The coelom must continue its development and compartmentalization, the blood vascular system forms in the connective tissue compartment, musculature, integument, and the endocrine system form. Gut derivatives such as the liver, lungs, pancreas, and gall bladder, urinary bladder, and many endocrine organs form.
Mammalian development for comparison/contrast w/avian:
The fertilized egg after multiple cell divisions (blastula stage) implants into the uterine wall of the mammalian female and continues to develop
This connection handles all gas exchange and nutrient delivery through shared blood flow b/n mother and embryo until the fetus develops to term.
your lucky I didn't answer, I grew up for a portion of my life on a chicken farm and I didn't know half those
but! I know i miss my pet chickens dearly! Grampa got me some japanese chickens (SO FLUFFY!) raised em from chicks, used to carry em around everywhere on my fingers on the farm lol
*sigh...ya
Bird farms rock (had a pet pigeon and peacock too)
yeah I felt like a retard when my friend was asking me these questions. I've grown up on a farm and we had chickens. It was cool to see the yolk in the chickens when you were cleaning them. I never even noticed teh white spot on the yolk. oh well the things you learn.
Probably not, you have to be special to get one of those. Did mummy get her special little boy lots of special things to keep him happy on the special bus?
My grandpa grew up on a farm, and he had a pet lamb that he loved dearly. His mother always told him "do not get attached to the farm animals." One day he came home from some event and it was dinner time, so he proceeded to eat without hesitating. After dinner he went to play with his lamb, and he couldn't find it any where on the farm. He went back in and asked his mom where it was. She just said "I told you not to get attched to farm animals." She had served his lamb to him for dinner.
God she was such a bitch. I loathed that woman growing up, I know this is sad, but I was kind of glad when she died.
You are about to answer a thread that has been inactive for more than 6 months. If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.