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Which of the following most accurately explains the meaning of a repression lag?
A. A repression lag refers to the time that it takes for the last full-length mRNA transcript to be synthesized after transcriptional repression has been enforced.
B. A repression lag refers to the time that it takes for transcriptional repressors to be recruited to enhancer elements after transcription has been initiated.
C. A repression lag refers to the time that it takes for DNA methylation, histone methylation and histone de-acetylation to make the core promoter inaccessible to new RNA Pol II proteins.
D. A repression lag refers to the length of time that RNA Pol II is pauses (or stalls) at the +30 site
Cotyledon is a leaf-like structure which is present in the seeds of the flowering plants; it appears during seed germination and sometimes is referred to as the seed leaf.
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Agroup of realated genera are classified as-?
Q. What is the clitellum of earthtworms and where it is located? The clitellum is a special region of the annelid constituted by rings (metameres) with reproductive function. I
What is the feeding habitat of branchiostoma?
Choose the correct answer. A. The phenotype determines the genotype. B. True-breeding individuals are produced by repeated backcrossing. C. Recessive alleles are usually loss-of-fu
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In Drosophila, the anterior determinant Bicoid is known to activate expression of the gene hunchback in the anterior half of the embryo. (Bicoid is a transcription factor, which b
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