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20 Cards in this Set
- Front
- Back
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Hypothesis Based Approach
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Make hypothesis then do experiment
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Discovery based approach
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Do experiment and see result
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Polarity
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Content distributed a certain way-->important for devo of organism
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Region we still dont understand
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10nm-100nm
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Transactivator
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protein that binds DNA and stimulates transcription
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Interphase
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State of division. Nucleus intact, Synthesis of new DNA
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Mitosis
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Nucleus disassembled, X can be seen, DNA condensed
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Sister chromatid
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2 DNA molecules, identical
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Homologs
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Chromosomes from each parent, 4 dna molecules, not identical
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Proteins that regulate devo are:
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1) transactivators
2) Signaling molecules |
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Syncitium
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multiple nuclei in egg of drosophila bc cell walls dont form
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Headfold
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Substructure on larval form, if affected, the structure of the head is changed
Position depends on concentration of bicoid |
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Bicoid
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Transactivator that sits on DNA to stimulate transcription. diffuses forming a protein gradient
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target of bicoid
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Hunchback gene (concentratrion of bicoid determines the concentration of hunchback expression)
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Rapid fall off of bicoid concentration implies____
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that there are different sites with SAME affinity
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Gradient of bicoid
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sites with different affinities for activator
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With different affinities binding sites, low concentration of bicoid _____ binding to low affinity sites
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reduces
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With different affinities binding sites, high concentration of bicoid _____ binding to low affinity sites
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increases
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HOX
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are transactivators with similar dna binding domain(homeodomain)
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Humans have a ____of HOx gene
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cluster
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