Evolution and the study of animal behavior
11 important questions on Evolution and the study of animal behavior
What is natural selection and what is the relation with Darwin?
Darwin was the first to describe natural selection by which evolution can occure
What are Darwins 3 conditions required for evolution by natural selection?
2. individuals traits are heritable
3. traint confer differences in survivorship and reproduction
What are 2 measures of heritablity?
-selection experiment: different groups of individuals are subjected to different selection on the trait in question
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Why do individuals in populations vary in behaviour? name 6
2. many behaviours develop as a consequence of both genetic and environmental effects
3. many complex behaviours require learning and so are modified with experience
4. little or na variation in fitness over a wide range of behaviours -> dispersal behaviour
5. individuals in all populations typically differ in size/health/status
6. the fitness of a traint may be related to its frequency
What is narrowsence heritability?
The greater the narrowsense heritability of a trait, a closer resemblance between offspring and their parents in that trait
What is slope of regression and what do higher and lower slopes indicate?
the higher the slope value, the more offspring resemblance their parents.
lower slope values indicate that less of the phenotypic variance is due to additive genetic variance and so is not transmitted to offspring
A behaviour that displays almost no variation and is not stopped until complete is called a:
What is pleiotropy in genes?
What is the knockout technique in relation to genes?
What are quantitative trait loci?
What is QTL, quantitative trait loci, mapping?
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