Which definition most closely attributes the characteristics required to contribute to the evolution of a species?

a) Individual has a mutation and also engages in viable reproduction
b) Individual mates with an individual of a neighboring, but different species
c) Individual is able to and also engages in viable reproduction.
d) Individual has the same attributes as others and is able to fend of predators.

A) Individual has a mutation and also engages in viable reproduction

Explanation:

If an individual has a mutation and reproduces w/ another individual, there is a chance that the offspring will have that same mutation. If the offspring w/ the mutation reproduces, the mutation will be passed on throughout the species. Hope this helps!!

both male and female gametes are produced by meiosis of the germ cells. therefore, both male and female gametes are haploid. one male and one female gamete unite during the fertilization to form the diploid zygote. in seed bearing plants, pollen grain is the male gametophyte, which produces sperm cells.