Chapter 17 biology vocab
Terms in this set (20)
Common group of genes.
Number of times an allele occurs in a gene pool, compared to the total number of alleles in that pool for the same gene.
A trait controlled by only one gene.
Traits controlled by two or more genes.
When individuals have higher fitness than on the middle or at the other end.
When individuals near the middle of the curve have higher fitness.
When individuals at outer ends of the curve have higher curves than the middle.
Random change in allele frequency.
Change in allele frequency following a dramatic reduction of size of a population.
Allele frequencies change as a result of the migration of a small subgroup of a population.
Allele frequencies do not change.
States that allele frequencies in a population should remain constant unless one or more factors cause those frequencies to change.
Individuals select mates based on inheritable traits.
Population or group of populations whose members can interbreed and produce fertile offspring.
Formation of a new species.
When a population has split into two groups changes in gene pools can not spread to the other and can no longer interbreed.
Two species that can interbreed separate due to differences in courtship rituals or other behaviors.
When two species are separated by geographic barriers.
Two or more species reproduce at different times.
Uses mutation rates in DNA to estimate the time that two species have been evolving independently.
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