Cellular Control (OCR A-Level Biology A): Flashcards
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Practise the cards
10 cards from this deck
Transcription factors
Transcription factors
Proteins binding DNA, controlling gene transcription rate
Homeobox sequence: bases & amino acids coded
Homeobox sequence: bases & amino acids coded
180 bases coding for 60 amino acids
Antennapedia mutation effect in Drosophila
Antennapedia mutation effect in Drosophila
Legs grow in place of antennae on head
What Hox genes control
What Hox genes control
Body plan along head-tail axis; regulate other genes
Number of Hox clusters in vertebrates
Number of Hox clusters in vertebrates
4 clusters
Hox gene order principle
Hox gene order principle
Linear gene order = body region order they affect
Apoptosis
Apoptosis
Programmed cell death
Proto-oncogenes function
Proto-oncogenes function
Stimulate cell division
Tumour-suppressor genes function
Tumour-suppressor genes function
Reduce cell division, stimulate apoptosis in damaged cells
Cyclins vs CDKs roles
Cyclins vs CDKs roles
Cyclins = regulators; CDKs = catalysts when activated