Question

The species evolution is the ______ of evolution by _____ in a genome.

(a) combined result, multiple genes

(b) result, single genes

(c) result, sole genes

(d) distinct results, single gene

I have been asked this question in examination.

The query is from Gene Phylogeny Versus Species Phylogeny topic in division Molecular Phylogenetics of Bioinformatics

Answer 1

Correct choice is (a) combined result, multiple genes

The explanation is: In a species tree, the branching point at an internal node represents the speciation event whereas, in a gene tree, the internal node indicates a gene duplication event. The two events may or may not coincide.