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: 15739

#Unit 5. Developmental Biology

 In mammals, If no Y chromosome is present then transcription factors Wt1, Lhx9, GATA4, and Sf1 activate expression of:

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#Question id: 13225

#Unit 6. System Physiology – Plant

 The three elements are not considered mineral nutrients these are-

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#Question id: 1293

#Unit 4. Cell Communication and Cell Signaling

NCAMs, a group of cell-adhesion proteins belonging to the Ig superfamily. Which of the following is not a property of NCAM?

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#Question id: 5439

#Unit 8. Inheritance Biology

Which of the following phenotypes is an example of polygenic inheritance?

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#Question id: 8910

#Unit 9. Diversity of Life Forms

Both animals and fungi are heterotrophic. What distinguishes animal heterotrophy from fungal heterotrophy is that only animals derive their nutrition