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TLS Online TPP Program

#Question id: 7271

In drosophila, Head formation required higher Bicoid concentrations than thorax formation, because

#Unit 5. Developmental Biology
  1. The promoters of such head specific genes would have high-affinity binding sites for Bicoid protein, causing them to be activated only at extremely high concentrations of Bicoid.
  2. The promoters of such head specific genes would have low-affinity binding sites for Bicoid protein, causing them to be activated only at extremely high concentrations of Bicoid.
  3. The promoters of such head specific genes would have high- affinity binding sites for bicoid protein, causing them to be activated only at extremely low concentratrations of bicoid.
  4. The promoters of such head specific genes would have low-affinity binding sites for Bicoid protein, causing them to be activated only at extremely low concentrations of Bicoid.
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TLS Online TPP Program

#Question id: 13226

#Unit 6. System Physiology – Plant

Mengel and Kirkby  have proposed that the essential elements be classified instead according to their biochemical role and physiological function, It shows such a classification, in which plant nutrients have been divided into some basic groups these are;
a.) The first group is nutrients that are part of carbon compounds
b.) The second group is important in energy storage reactions or in maintaining structural integrity
c.) The third group has important roles in reactions involving electron transfer or redox reaction
d.) The fourth group is present in plant tissue as either free ions or ions bound 
Which one of the following group represents CORRECT statements
TLS Online TPP Program

#Question id: 15811

#Unit 5. Developmental Biology

In XX Drosophila, which gene is activated during the first 2 hours after fertilization?
TLS Online TPP Program

#Question id: 2642

#Unit 2. Cellular Organization

We know that lactose has a positive impact on the activity of the lac operon. Tryptophan’s presence has a ________________
TLS Online TPP Program

#Question id: 5321

#Unit 11. Evolution and Behavior

Biologists now routinely test for homology between genes in different species. If genes are determined to be homologous, how are they related to each other?
TLS Online TPP Program

#Question id: 26434

#Unit 3. Fundamental Processes

Mismatch repair system functions with the sliding clamp where human homologs of MutS (MSH) interact with sliding clamp component, which is