Suppose that within the dog population of u. s. bull terriers the prevalence of pure white bull terriers (rr) increased within the breed so significantly that the frequency of the white allele (r) jumped by 20% during the 25-year period from 1985 to 2010. assuming the major factor increasing the occurrence of the white (r) allele was that breeders and kennels outside the united states imported large numbers of black bull terriers from the u. s. during this period, which principle applies

During the period mentioned in the question, the Hardy-Wienberg principle is applied.

According to the Hardy-Wienberg principle, five IDEAL conditions must be maintained:

1. Random Mating
2. No Mutations
3. Isolation from Other Populations
4. Large Production Size
5. No Natural Selection

Hardy-Wienberg principle is an equation that explains how genes are inherited in a population, based on the allele frequency in the population or gene pool.

Ais the correct answer

answer: carbon 14 can only be used to determine the age of the organisms that were once living, and igneous rocks are non living.

explanation:

carbon 14 dating is used to determine the age of the sample by estimating the amount of carbon 14 present in the sample and then comparing it with a reference standard.carbon 14 is a isotope of carbon which is radioactive and unstable. carbon 14 is assimilated by all plants and animals throughout their life from carbon dioxide. however, one the organisms die they stop this assimilation and the carbon 14 content starts to decrease.by knowing how much of carbon 14 is left in an organism after his death, one can estimate the age of the organism. the materials whose age can be estimated by carbon 14 method are the organic compounds. however, some inorganic compounds such as aragonite   shell can also be dated.however, if we consider the igneous rocks it is a non living component which never accumulated carbon 14 in it and thus, we cannot use carbon 14 dating method to estimate its age.