Following statements are regarding to the role of the Disheveled and β-catenin proteins in specifying the cells of the sea urchin embryo.

A. During normal development, β-catenin accumulates predominantly in the micromeres and somewhat less in the veg2 tier cells.

B. In embryos treated with lithium chloride, β-catenin accumulates in the nuclei of all blastula cells and the cells of the animal pole become specified as ectoderm.

C. When β-catenin is prevented from entering the nuclei (i.e., it remains in the cytoplasm), the vegetal cell fates are not specified, and the entire embryo develops as a ciliated ectodermal ball.

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 specified as endoderm and mesoderm .

Which of the following statements are true?

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#Question id: 7229

#Unit 5. Developmental Biology

Two embryos were injected with bicoid at early cleavage stage. What would be the phenotypes of the resulting embryos?

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#Question id: 18614

#Unit 13. Methods in Biology

The primer length affects the efficiency rate of PCR, this rate decreases as the primer length

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#Question id: 5386

#General Aptitude

The average income of 20 employees in an office is Rs 1800 per month .if one more employee is added the average salary becomes Rs 1810 per month .what is the monthly salary of the new employee?

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#Question id: 12736

#Unit 13. Methods in Biology

Match the following:

1. Emphysema                                                    i.  Fibroblasts

2. Immune System Disorder                        ii.  HPRT cLesch-Nyhan syndrome                           iv. T and B cells

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#Question id: 11017

#Unit 7. System Physiology – Animal

Which of the following is most likely at the “J point” in an EKG of a patient with a damaged cardiac muscle?