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Title: In an organism such as a sea urchin, administration of actinomycin D prevents RN Post by: mikael on Jan 12, 2014 In an organism such as a sea urchin, administration of actinomycin D prevents RNA synthesis. However, early development up to gastrula formation can take place in the presence of actinomycin D but gastrulation cannot. This implies that
A) development beyond gastrulation requires actD. B) actD is part of the normal environment of a sea urchin and serves as a developmental signal molecule. C) actD receptors begin to form only on cell surfaces of the gastrula. D) maternal effect genes regulate development until gastrulation. E) immature sea urchin embryos produce actD to regulate further development. Title: Re: In an organism such as a sea urchin, administration of actinomycin D prevents RN Post by: padre on Jan 14, 2014 Content hidden
Title: Re: In an organism such as a sea urchin, administration of actinomycin D prevents RN Post by: mikael on Jan 15, 2014 Thanks so much. This is perfect.
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