A fish breeder wishes to develop a silver goldfish. She starts with a diverse mixture of fish, some more silver than others. Generation after generation, she allows only the most silver fish to breed. After 30 years of work she has a new breed of fish with interesting traits, but on average, the fish are no more silvery than other goldfish. Which of the following would be a logical explanation for her failure?

There is no variation for the trait (silver coloration).
Silver coloration is an environmentally-determined trait.
The selection was artificial, not natural, so it did not produce evolutionary change.
There was no selection (differential reproductive success) related to silver coloration.
The breeder accidentally picked less silver fish when she meant to pick more silver fish.

autosomal

explanation:

is a term used in genetic genealogy to describe dna which is inherited from the autosomal chromosomes

the oldest known insects are believed to live around 400 millions ago as suggested by the fossil records.   some plants having woody stems also evolved during this time.

after the evolution of insects the first four legged species or the tetrapods evolved in shallow freshwater habitats from the intermediate species approximately 397 million years ago. the tetrapods went on conquering the land giving rise to amphibians, reptiles, mammals and birds.

the major split in tetrapods first occurred 340 million years ago branching off from amphibians.

363 million years ago when the carboniferous period began the insects started roaming on land and taking flights, following which the four limbed tetrapods adapted in the terrestrial habitat.