Following statements are regarding to the three “toggle switches” activated along the anterior-posterior axis to establish gap gene domains in drosophila.

A. The mutual inhibition of Knirps and Hunchback positions the Knirps protein domain at around 60–80% along the anterior-posterior axis.

B. Hunchback inhibits Krüppel expression at high concentrations but promotes it at intermediate concentrations.

C. Hunchback inhibits Krüppel expression at intermediate concentrations but promotes it at high concentrations.

D. Krüppel and Giant mutually inhibit each other’s synthesis.

E. Kruppel inhibits Giant expression at high concentrations but promotes it at intermediate concentrations.

Which of the following statements are correct?

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#Question id: 28215

#Unit 5. Developmental Biology

In the frog (Xenopus laevis) a gradient of the paracrine factor activin, which of the following observation is correct at the lower concentrations of activin ?

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#Question id: 3308

#Unit 11. Evolution and Behavior

Consider a single locus with 3 alleles which are at Hardy- Weinberg equilibrium. If the frequency of all homozygous genotypes is 0.54, what is the frequency of allele in population?

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#Question id: 1030

#Unit 4. Cell Communication and Cell Signaling

The membranes of eukaryotes and mycoplasma

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#Question id: 26969

#Unit 10. Ecological Principles

Effects of intraspecific competition represented in the graph, Choose the correct graph on growth and photosynthesis ?

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#Question id: 28404

#Unit 5. Developmental Biology

Siamois and Twin transcriptional factor inducing the activation of the neuroepithelium genes, these genes are____