Scenario 4 – “The Silent Stem” (10 points) Botanists study a…
Scenario 4 – “The Silent Stem” (10 points) Botanists study a plant whose stem cells fail to divide unless exposed to light. Light activates transcription factor PHY‑A via a phosphorylation cascade. Adding a protein‑phosphatase inhibitor would likely PHY‑A target genes become euchromatic because If one target gene has two introns, its mature mRNA will be Scientists map a 3 kb PHY‑A enhancer using BamHI and HindIII. Restriction mapping is useful because it A partial Sanger chromatogram shows double peaks starting at one position. This likely indicates