Nature vs Nurture (VCE SSCE Biology): Flashcards
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Proportionate heritability definition
Proportionate heritability definition
Phenotypic variance explained by genes in a population
Epigenetics definition
Epigenetics definition
Changes to phenotype from modifications to gene expression
DNA methylation effect on genes
DNA methylation effect on genes
Silences genes, reducing or stopping expression
Somatically heritable meaning
Somatically heritable meaning
Traits inherited by daughter cells during mitosis
How environment typically affects proteins
How environment typically affects proteins
Modifies protein performance/function, not gene expression
Tyrosinase in Himalayan rabbits
Tyrosinase in Himalayan rabbits
Heat-sensitive enzyme that produces melanin when active
Gene expression definition
Gene expression definition
Reading gene info to create a functional product (protein)
Methyl groups effect on DNA
Methyl groups effect on DNA
Act as 'OFF switches', telling cells not to read that section
Human height heritability %
Human height heritability %
70-80% genetic, 20-30% environmental (mainly nutrition)
Epigenetic modifications & DNA sequence
Epigenetic modifications & DNA sequence
Don't alter DNA sequence, only influence gene expression