Which theory did Charles Darwin propose?

Hybrid instruments that play sounds that are part sampled and part synthesized are known as:

Agene pool: a) is the collection of all the alleles found in a single species b) is the collection of all the alleles found in a single population c) is the collection of all the chromosomes found in a single population d) is the collection of genes in a species that allow the individuals to swim

The mixture of sperm and fluids from the seminal vesicles, prostate gland, and cowper's glands is called