RNA polymerase can initiate a new RNA chain de novo on a DNA template and thus does not need a primer

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#Id: 598

#Unit 2. Cellular Organization

Like the Lambda repressor, the cII protein is a transcriptional activator. It binds to a site upstream of a promoter called PRE (for repressor establishment) and stimulates transcription of the cI (repressor) gene from that promoter.

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#Id: 7608

#Unit 5. Developmental Biology

Mutations in either Juno or Izumo block fertilization

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#Id: 2605

#Unit 13. Methods in Biology

Many different alleles are present in a population, but each person has only two alleles of any given SSR locus.

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#Id: 3244

#Unit 3. Fundamental Processes

DNA also undergoes depurination by spontaneous hydrolysis of the N-glycosyl linkage, and this produces an abasic site (i.e., deoxyribose lacking a base) in the DNA.

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#Id: 4579

#Unit 6. System Physiology – Plant

Effects of red light (650–680 nm) on morphogenesis could be reversed by a subsequent irradiation with light of longer wavelengths (710–740 nm), called far-red light. This phenomenon was first demonstrated in germinating seeds.