Evo-Devo Flashcards
Taxes can be grouped in evolutionary ways by understanding
Evolutionary patterns
Development can act as a link between
Phenotype and genotype
DEVO=
Understand macro evolutionary relationships
EVO=
Understand evolution of animal form and developmental pathways
Developmental pathway genes
Hox genes
A homeotic transformation is when
Body parts develop into another body part due to misinterpreted positional information
Homeodomain is encoded by homeobox but what does it do?
It’s a transcription factor which binds to a promoter and controls transcript of a gene
Hox genes are
Regulatory genes that turn on/off other genes to produce proteins
Colinearity =
Correlation between order of Hox genes and order of gene deployment
Hox genes do the same thing in the same position in different organisms, which is
A conserved function
Why may a cascade occur?
Hox is master control gene and influences a target gene, which may affect other genes-causing a cascade
Opportunity for serious evolutionary pathways =
Spatial co option
Novel structures occur due to
A novel gene expression over evolutionary time which differs from the ancestral ontogeny developmental pathway
Ancestral Ubx protein changed and altered expression suppressing …
Leg formation in abdominal segments in insects
Ubx expression differs between groups which results in
Regulation of cascade of genes which are regulated differently in Diptera and Lepidoptera
