Captive-bred trout reduce the fitness of wild populations, Relative fitness Wild Captive Captive Wild Wild Captive What statement best summarizes the results?A) The gene flow between hatchery-reared and wild populations is leading to a decline in fitness of wild populations. B) The gene flow between hatchery-reared and wild populations is increasing the fitness of the wild populations. C) The gene flow between hatchery-reared and wild populations is neither helping nor hindering the fitness of the wild population. D) This data does not help us understand effects of gene flow on fitness.

A) The gene flow between hatchery-reared and wild populations is leading to a decline in fitness of wild populations.

Explanation:

we have relative fitness at its greatest in trouts whose parents are wild x wild. crossing the wild with hatchery reared causes a decrease in the fitness of the troutgene flow is the exchange of genes between two different breeds. the wild is a greatly diverse breed and it is highly adaptive. while the hatchery reared is less adaptive.when these two breed less fit alleles will then be transferred to the wild

therefore option a answers the question

format change of dna.  

this is true, assuming that the allele is completely recessive and incomplete dominance is not a factor.