Which of the following is not part of the cell theory

Every cells have a nucleus that contains genetic material.

not the best question format lol but what i think might as scale color is controlled by a single gene with two alleles, the green allele and the yellow allele. when moths that are homozygous for green scales are mated with moths that are homozygous for yellow scales, 100% of the offspring have green scales.

any abiotic or biotic factor in an ecosystem that causes a population's size to slow or decrease is a limiting factor.