Enhancers are transcription factors that bind to regions of dna and increase the rate of transcription of specific genes. silencers, on the other hand, are transcription factors that repress the transcription of specific genes. enhancers and silencers are examples of factors a cell can use to

Each pair of clay balls represents two planetesimals. if each planetesimal is composed of the same material and is separated he the same distance, which pair experiences the frayed gravitational attraction?

The unique structure of the neuron is dedicated to the efficient and rapid transmission of neural signals. the relationship between neurons, the spinal cord, and the brain constitutes an elaborate communication system throughout the human body. all but one of the functions listed below are a result of this interaction.

Where can a dna be found in a prokaryotic cell