Select the best description of how natural selection works with regards to genes and what is passed to the next generation. a
Those with the most favorable combination of genes die off not allowing their DNA to be passed on to the next generation.
b
Natural selection allows genes to mutate changing the species of an organism.
c
Those with the least favorable combination of genes survive and pass their DNA to the next generation.
d
Those with the most favorable combination of genes survive and pass their DNA to the next generation.

Those with the most favorable combination of genes survive and pass their DNA to the next generation is the best description of how natural selection works with regards to genes and what is passed to the next generation.

Option d is the right answer.

Explanation:

Natural selection is a mechanism in which organisms adapt best to their environment survive and evolve.

The idea lies behind the fact that in limited resources of earth those with beneficial heredity trait are able to survive and reproduce in large numbers.

The individuals in the population will let the beneficial traits transfer in large numbers.

The occurrence of individual with favorable combination of genes will be more.

The correct statement can be understood as the favourable combination of gene will produce favourable phenotype will help the individual better survive and such traits are passed on to the offsprings via DNA or genes.  

sex cells are usually half's then they find another half and make a fertilize egg