-In this phylogeny feather pattern on the head is the trait used to separate the sparrows into groups. DNA analysis suggests a different phylogeny that places white-crowned birds and golden-crowned birds more closely together. Therefore, what process results in the striped pattern on the head?
Definitions:
Cultural Diffusion
The spread of cultural beliefs and social activities from one group to another through interaction and integration.
Fertility Rate
The average number of children born to a woman over her lifetime, used to assess population growth or decline.
Crude Birthrate
A statistical measure representing the number of live births in a given year per 1,000 population in a specific area.
Fecundity Rate
The potential reproductive capacity of an individual or population, often measured by the number of children women could have.
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