When an albino female plant of maize is crossed with normal green male plant, all plants in the progeny are albino because

#Question id: 5829

#Unit 8. Inheritance Biology

Transitions are base pair substitutions where:

#Question id: 12527

#Unit 6. System Physiology – Plant

#Question id: 774

#Unit 1. Molecules and their Interaction Relevant to Biology

RISC stands for:

#Question id: 4659

#Unit 3. Fundamental Processes

Many bacterial responses are controlled by two component regulatory systems. What will happen at the high concentration of glutamine and at the low concentration of glutamine?

a) At high concentrations glutamine binds to a sensor domain of NtrB conformational change in the protein that inhibits its histidine kinase activity

b) NtrC phosphorylation takes place causes a conformational change in NtrC that unmasks the NtrC DNA-binding domain so that it can bind to the glnA enhancers

c) At the same time, the regulatory domain of NtrC blocks its DNA-binding domain from binding the glnA enhancers

d) At low concentrations of glutamine dissociates from the sensor domain in the NtrB protein, leading to activation of a histidine kinase transmitter domain

Which of the following given combination is correct?

#Question id: 4390

#Unit 3. Fundamental Processes

Epigenetics marks refer to modifications to DNA and proteins that in turn regulate gene expression. Which statement is true regarding these specific types of modifications?