Answer:
The correct answer is the last option, that is, multigene families are similar or identical genes, whose evolution took place by gene duplication.
Explanation:
A member of a family of the associated proteins encrypted by an array of identical genes is known as a multigene family. It is considered that the origination of the multigene families has resulted due to the variation and duplication of a single ancestral gene.
The multigene families make the assembly of the proteins comparatively quickly, as it assists in the simultaneous transcription of various genes at distinct locations.
Polar because it always is below 32 degrees and has no rainfall
A common use of carbohydrate is to provide energy for plants, animals and human.
