The regeneration blastema forms from pluripotent stem cells called clonogenic neoblast. If cNeoblasts are essential for regeneration, their total loss should prevent regeneration. Following statements are made in respect to planaria regeneration are given below.

(A) The gene sigma/zeta is expressed by all neoblasts and has become the most common marker for their identification across planarian species.

(B)   In planaria, Wnt/β-catenin functions to establish dorsal ventral polarity of the regenerating flatworm.

(C)   Inhibition of Wnt/β-catenin signaling in regeneration-deficient species yields fully functional regenerated heads.

(D)   If β-catenin is eliminated from the posterior (tail-forming) blastema by RNA interference, that blastema will form a tail.

Which of the above statements are true?

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#Question id: 14863

#Unit 6. System Physiology – Plant

Plant and fungal plasma membrane H+-ATPases and Ca2+-ATPases are members of a class known as P-type ATPases, which are phosphorylated as part of the catalytic cycle that hydrolyzes ATP. Because of this phosphorylation step, the plasma membrane ATPases are strongly inhibited by

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#Question id: 23578

#Unit 8. Inheritance Biology

During chromosomal rearrangements are one way in which new genes evolve which is

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#Question id: 3737

#Unit 3. Fundamental Processes

The main difference between prokaryotic and eukaryotic DNA replication mechanisms is

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#Question id: 29516

#Unit 6. System Physiology – Plant

Cyanide inhibits cytochrome c oxidase in the mitochondria, which blocks the electron transport chain produced  by given reaction involves enzyme a and b which are

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#Question id: 12502

#Unit 8. Inheritance Biology

In the pedigree shown, on the basis of the linked marker results II 4 can be told that: