Which of the following is a true difference between prokaryotic and eukaryotic cells? a. eukaryotic cells are smaller. b. eukaryotic cells are less complex. c. eukaryotic cells are more ancient. d. eukaryotic cells have true nuclei.

Correct Option is D.

D. Eukaryotic cells have true nuclei.

Eukaryotic cells contain membrane-bound organelles, including a nucleus. Eukaryotes can be single-celled or multi-celled, such as you, me, plants, fungi, and insects. Bacteria are an example of prokaryotes.

Prokaryotic cells do not contain a nucleus or any other membrane-bound organelle.

genetic variation can be caused by mutation (which can create entirely new alleles in a population), random mating, random fertilization, and recombination between homologous chromosomes during meiosis (which reshuffles alleles within an organism's offspring).

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