Each of the three major strategies of cell specification summarized in TABLE  offers a different way of providing each embryonic cell with a set of determinants (often transcription factors) that will activate specific genes and cause the cell to differentiate into a particular cell type:

Choose right combinations;

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#Question id: 12062

#Unit 7. System Physiology – Animal

Mass movements are often stimulated after a meal by distention of the stomach (gastrocolic reflex) and distention of the duodenum (duodenocolic reflex). Mass movements often lead to which of the following?

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#Question id: 19988

#Unit 2. Cellular Organization

Disparity in genome content vs evolutionary status is called as 

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#Question id: 2310

#Unit 2. Cellular Organization

The nucleus is surrounded by 

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#Question id: 32240

#Unit 2. Cellular Organization

Which one of the following GTPase switch protein activated at the ER membrane?

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#Question id: 15652

#Unit 13. Methods in Biology

You are studying a new strain of E. coli that can utilize the disaccharide melibiose very efficiently. You find that utilization depends on the enzyme melibiase, which is encoded by the gene Mel1. Mel1 is not expressed unless melibiose is present in the growth medium. You have isolated a mutation that causes constitutive melibiase activity, which you designate MelA–. P1 phage mapping experiments using a Tn5 insertion linked to Mel1 show that MelA– is not linked to Mel1. Moreover you find that when an amber suppressor is introduced into a MelA– mutant, normal melibiase regulation is restored. Classify the MelA– mutation in terms of its basic genetic properties,