Practice Questions

  1. Home
  2. Free Resources
  3. Practice Questions
  4. 5983
TLS Online TPP Program

#Question id: 7183

Following graphs (A and B) represents establishment of a maternal gradient in Hunchback protein.

                  

which of the following statements are correct according to graphs?

#Unit 5. Developmental Biology
  1. Graph A shows unfertilized egg, in which maternal hunchback mRNA is present at a relatively low level throughout the egg, whereas nanos mRNA is located posteriorly and Graph B shows fertilized egg, in which nanos mRNA is translated and nanos protein blocks translation of hunchback mRNA in the posterior regions, giving rise to a shallow antero-posterior gradient in maternal Hunchback protein.
  2. Graph A shows fertilized egg, in which nanos mRNA is translated and nanos protein blocks translation of hunchback mRNA in the posterior regions, giving rise to a shallow antero-posterior gradient in maternal Hunchback protein and Graph B shows unfertilized egg, in which maternal hunchback mRNA is present at a relatively low level throughout the egg, whereas nanos mRNA is located posteriorly.
  3. Graph A shows unfertilized egg, in which nanos mRNA is translated and nanos protein blocks translation of hunchback mRNA in the posterior regions, giving rise to a shallow antero-posterior gradient in maternal Hunchback protein and Graph B shows fertilized egg, in which maternal hunchback mRNA is present at a relatively low level throughout the egg, whereas nanos mRNA is located posteriorly.
  4. Graph A and B both shows fertilized egg, in which nanos mRNA is translated and hunchback mRNA is untranslated.
More Questions
TLS Online TPP Program

#Question id: 1810

#Unit 4. Cell Communication and Cell Signaling

Allelic exclusion is not seen for:
TLS Online TPP Program

#Question id: 23688

#Unit 13. Methods in Biology

Bacteria containing a plasmid into which the eukaryotic gene has integrated would grow in
TLS Online TPP Program

#Question id: 11548

#Unit 7. System Physiology – Animal

If a portion of the pancreas is surgically removed from a rat and the rat subsequently loses its appetite, one explanation is that the removed portion contains cells that secrete a chemical signal that somehow stimulates appetite. Given this scenario, what type of chemical signaling is occurring?
TLS Online TPP Program

#Question id: 2375

#Unit 2. Cellular Organization

 Plastids that contain starch are called _________, whereas those that contain red and yellow pigments are called_________.
TLS Online TPP Program

#Question id: 29076

#Unit 10. Ecological Principles

Corals and the Dinoflagellates showing which type of mutualism