BIOLOGY 1A03 Study Guide - Midterm Guide: Gamma Globulin, Hbb, Globin

• School: McMaster University
• Department: Biology
• Course: BIOLOGY 1A03
• Professor: Lovaye Kajiura

Document Summary

How cells differentiate their structure + function by regulating levels of gene expression. Eukaryotic cells accomplish this using dna binding proteins around promoter, similar to prokaryotes. Dna in eukaryotic cells are wound in chromatin that can maintain default off state of. Gene transcription activated by re meddling structure of chromatin. As a zygote, all embryonic stem cells > identical. Early embryonic cells can differentiate with almost unlimited ability. Cells communicated with each other, begins to partake in genetic interactions. Development of fertilize zygote > depends on molecular communication. Signals exchanged, which genes are switched on/off at speci c times. Transcription factors > proteins that bind to dna sequences: contain structure, allows them to interact with double helix, controls transcription and gene regulation, determine pathway speci c cell follows and nal mature cell type. Controlling genes active on chromosome leads to different cell types. Cell proteins can only be found in certain cell types.