Few statements regarding the role of disheveled (dsh) and beta-catenin in the development of sea urchin.

A. beta-catenin accumulates predominantly in the macromeres and somewhat in veg2 tier cells.

B. At the fourth cleavage disheveled and β-catenin, both of which are found in the cytoplasm and are inherited by the micromeres.

C. Treating sea urchin embryos with lithium chloride allows β-catenin to accumulate in every cell and transforms presumptive ectoderm into endoderm.

D. When β-catenin is prevented from entering the nuclei (i.e., it remains in the cytoplasm), the vegetal cell fates are specified, and the entire embryo develops as a ciliated ectodermal ball.

Which one of the following options represents a combination of correct statement?

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#Question id: 11301

#Unit 10. Ecological Principles

How is phosphorus returned to the soil from organic phosphorus?

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#Question id: 4066

#Unit 3. Fundamental Processes

Specific DNA control elements in promoters can

a. interact with general transcription factors.

b. interact with repressor proteins. 

c. interact with activator proteins.

d. remain unavailable because of condensed chromatin.

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#Question id: 18589

#Unit 7. System Physiology – Animal

Effective way(s) to control and redirect anger include(s) which of the following?

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#Question id: 10263

#Unit 8. Inheritance Biology

During cell division, sometimes there will be failure of separation of sister chromatids. This event is called

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#Question id: 18740

#Unit 13. Methods in Biology

There are various methods to distinguish whether a colony contains a recombinant or not. One such method is __________