Which of the following exist in a population have to undergo natural selection?
a) no mutations
b) a favorable trait
c) homologous structure
d) all the same genes

a structure that has no known function, but possibly had a function for an ancestor is known as
a) vestigial structure
b) homologous structure
c) natural selection
d) mutation

1. B)favorable trait

2. A)vestigial structure

Natural selection is the occupancies of a favorable trait

Vestigial structure is a structure that is not in use anymore but could have been used by and ancestor. For example our tailbone

the diploid number of chromosomes is sometimes represented by the symbol 2n. for the fruit fly, the diploid number is 8, which can be written as 2n = 8, where n represents twice the number of chromosomes in a sperm or egg cell.

easy

explanation: