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Which one of the following statements regarding regeneration in Hydra is correct? (1) It follows only stem cell-mediated regeneration. (2) It follows only stem cell-mediated regeneration and morphallaxis. (3) It […]

Which of poikilotherm have endogenous cardiac stem cells regenerative heart? (1) Snake (2) Lizard (3) Zebrafish (4) Toad  Comparing Poikilotherms for Cardiac Regeneration Zebrafish (Danio rerio): Renowned for their remarkable […]

Axolotal Larvae is due to- (1) Absence of thyroid gland in organism (2) Lack of iodine in habitat (3) Lack of pituitary hormone (4) Unfavorable environment The Cause of Axolotl […]

Human polysyndactyly (joining of extra digits) syndrome results from a homozygous mutation at (1) antennapedia complex locus (2) one of the genes of Hox D (3) one of the genes […]

The hedgehog pathway is extremely important in vertebrate limb development, neural differentiation and facial morphogenesis. In accordance with the above statement, what would happen in mice that are homozygous for […]

Species to expression of some of the pattern-forming genes in vertebrate limb bud: A. Lmx1b gene is expressed in dorsal mesenchyme B. Shh is expressed in the posterior region. C. […]

Which one of the following statements is NOT correct regarding the tetrapod limb development? (1) As the limb grows outward, the stylopod forms first, then the zeugopod and the autopod […]

Homeobox transcription factor (Hox proteins), play important roles in specifying whether a particular mesenchymal cell will become stylopod, zeugopod or autopod. Based on the expression patterns of these genes, a […]

When a wrist blastema from a recently cut Axolotl forelimb is placed on a host hindlimb cut at the mid thigh level, it will generate only a wrist. The host […]

The programmed cell death that separates the digits during a tetrapod limb development is dependent on which one of the following signaling pathways? (1) BMP (2) FGF (3) Wnt (4) […]