Yolk sac

Hi tou, I have a video showing moving coacervates that I made with red cabbage indicator and egg yolk. It seemed like a good thing to try together and it worked great. http://www.youtube.com/watch?v=iA1OGYo-Syc I suspect that the light might be activating the cabbage pigment ...

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I'm trying to describe a new (for teachers) classroom experiment where egg yolk is mixed with red cabbage pH indicator solution which forms very lively (what should be) coacervates. My first problem is I do not have the microscope system to get a good video of ...

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ZW(female) ----------------------> XY(male with yolking/lactating potential) ___________parthenogenesis After that yolking/lactating potential were transfered to new females(XX). The sex chromosome rebus of platypuses reveal recent ZW - nXY transformation.

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... a chance. What exactly is parthenogenesis? Both gametoids for heir are from one(female-ZW) parent. In most cases parthenogenesis occur with double yolk eggs.

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... anyone please help me out..I just cant understand this gastrulation stage ...my book's too confusing..can't understand how the hypoblast forms the yolk sack? and what exactly are area pelucidia and area opaca? cant understand primitive streak as well as hensen node....arghh...and google is not ...

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