1. How can the study of the embryos help show the relationships among animals with backbones?
2. What do shared embryological developments indicate?
3. What part of the video clip did you find the most interesting? why?
Wednesday, April 28, 2010
COMPARATIVE EMBRYOLOGY: video clip from class
CLICK HERE to watch the video clip that shows the embryological development of four different species.
1. How can the study of the embryos help show the relationships among animals with backbones?
2. What do shared embryological developments indicate?
3. What part of the video clip did you find the most interesting? why?
1. How can the study of the embryos help show the relationships among animals with backbones?
2. What do shared embryological developments indicate?
3. What part of the video clip did you find the most interesting? why?
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my internet kept crashing as soon as i opened this video but here is the best answers i can come up with what i remember from class.
ReplyDelete1. The study of embryos help show relationships among animals with back bones because if you compare embryos at an early stage from different species, they are remarkably similar. Looking at different embryos, you can see the resemblance of the back bones.
2. Shared embryological developments indicate that the two (or more) species share a common ancestor.
3. I enjoyed the part of the video that compared and contrasted the different embryos of different species (the fish, rabbit, pig, human, and chicken). It was interesting to see even how alike all of them were in the early days, but how different they became as time went on.
i think that it is really cool how we look so close to pigs in our early embryonic stages. i also think its kind off weird that one the picture it shows how similar the four animals are. Pigs humans lizards and tortoises look very similar in the first embryonic stage in the picture. Also from the video we watched today in class, we look very similar to birds. Its very weird yet cool at the same time in a weird way.
ReplyDelete1. Embryos start out looking very similar in the early stages. The animals (with backbones) will then develope differently depending on their genes.
ReplyDelete2. Shared traits cinsider a common ancestory.
3. What I find interesting is the similarities of the animal embryos in its early stages. I never thought we looked as similar as a pig, or even be related in some ancestory way.
How do scientists look at embryos in the womb without killing the mother first?
1. In the early stages, the embryos of different organisms look amazingly similar. But as time goes on, the embryos will take the shape of what they look like fully developed.
ReplyDelete2. The fact that embryos show similarities prove that all organisms came from a common ancestor.
3. What I found most interesting was how all the different organisms looked very similar during the early stages of embryonic development, but as time went on, we started to look completely different.
1. How can the study of the embryos help show the relationships among animals with backbones?
ReplyDeleteAmong animals with backbones, the longer the embryos look the same during the developmental stages, the more recent their common ancestor was.
2. What do shared embryological developments indicate?
What shared embryological developments indicate is a recent or ancient (depending on similarities) shared, or common, ancestor.
3. What part of the video clip did you find the most interesting? Why?
The part of the video clip that I found the most interesting was how similar we looked to say, a lizard, or a tortoise, because, when fully developed and out of the womb, we look SO different!