In pan mixia, in the absence of migration, mutation, and selection the frequencies are a) constant in genotype and phenotype b) constant in genotype but variable in phenotype c)variable in genotype but constant in phenotype d)variable in both genotype and phenotype

option A - Constant in genotype and phenotype

Explanation:

Pan mixia is a situation in which an individual is just as likely to mate with another randomly chosen individual as any other in the population

In a situation as described in the question, sexual reproduction is limited to organisms of the same habitat, thus the genetic variation is reduced to the BAREST MINIMUM.

This results in Constancy in genotype and phenotype

humans are now responsible for causing changes in the environment that hurt animals and plant species. we take up more space on earth for our homes and cities. we pollute habitats. human activity often changes or destroys the habitats that plants and animals need to survive.

equal distribution i think.