Following are certain statements regarding

morphogen gradients and cell specification.

A. Morphogens are always transcription factors

B. Morphogens can be paracrine factors that are produced in one group of cells and travel to another population of cells

C. When the concentration of a morphogen drops below a certain threshold, cells stop differentiating and never get determined to another fate

D. Morphogen gradients are involved in conditional specification

Which combination of the above statements is true?

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#Question id: 18918

#Unit 13. Methods in Biology

Recognition Sequences for Some Type II Restriction Endonucleases 

Match them correctly

TLS Online TPP Program

#Question id: 921

#Unit 1. Molecules and their Interaction Relevant to Biology

Which of the following statements concerning the B oxidation of fatty acids is true?

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#Question id: 7154

#Unit 5. Developmental Biology

Cancer is believed to often arise from stem cells, rather than fully differentiated cells. Which of the following are consistent with this view?

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#Question id: 29565

#Unit 6. System Physiology – Plant

Which of the following is not true regarding Necrotrophs

TLS Online TPP Program

#Question id: 28487

#Unit 5. Developmental Biology

first visible sign of limb development is the___