#Question id: 7245
#Unit 5. Developmental Biology
Gradients of Wnt are essential for normal regeneration of a head and a tail by planaria. Which one of the following statement is incorrect?
#Question id: 28898
#Unit 4. Cell Communication and Cell Signaling
Active Wnt signaling leads to___
#Question id: 4540
#Unit 3. Fundamental Processes
Transcription of eukaryotic genes can be repressed in various ways. These include the four mechanisms
|
1. Competition |
a-Repression is caused by recruiting histone modifiers that alter nucleosomes in ways that inhibit transcript |
|
2. Inhibition |
b-A repressor binds to a site on DNA beside an activator and interacts with that activator, occluding its activating region |
|
3. Direct repression |
c-By binding to a site on DNA that overlaps the binding site of an activator, a repressor can inhibit binding of the activator to a gene and thus block activation of that gene. |
|
4. Indirect repression |
d-A repressor binds to a site upstream of a gene and, by interacting with the transcriptional machinery at the promoter in some specific way, inhibits transcription initiation. |
#Question id: 6557
#General Aptitude
S , M , .... , W, T , F , S
#Question id: 3587
#Unit 8. Inheritance Biology
Short hair in rabbits (S) is dominant over long hair (s). The following crosses are carried out, producing the progeny shown.
A. short X short = Progeny ( 3 short and 1 long)
B- short X long = Progeny (1 short and 1 long )
What is possible genotypes of the parents of cross A and cross B respectively