Peter Boag, studied the inheritance of beak depth in Galapagos finches by looking at the relationship between parent beak depth (in mm) and that of their offspring.  He collected two sets of parent offspring data, once in 1976 and again in 1978.  For both years he followed birds to determine which pairs belonged to which nests. Most of the parents had been previously captured so their beak depths were known.  He then captured the offspring when they fledged and measured their beak depth.  He calculated the "midparent" beak depth (the average beak depth of the two parents) and then compared that to beak depth of their offspring.   Use regression analysis to estimate heritability for the trait beak depth from the Galapagos finches data in the above table.

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 Peter Boag, studied the inheritance of beak depth in Galapagos finches by looking at the relationship between parent beak depth (in mm) and that of their offspring.  He collected two sets of parent offspring data, once in 1976 and again in 1978.  For both years he followed birds to determine which pairs belonged to which nests. Most of the parents had been previously captured so their beak depths were known.  He then captured the offspring when they fledged and measured their beak depth.  He calculated the "midparent" beak depth (the average beak depth of the two parents) and then compared that to beak depth of their offspring.

 

Use regression analysis to estimate heritability for the trait beak depth from the Galapagos finches data in the above table.    

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