Biologists once assumed that the phenotype of a dominant allele would always be the most common phenotype in a population. which finding led biologists to a different conclusion?

Some steps in cell division are shown below: 1. chromosomes condense and pair up 2. segments of dna of sister chromatids twist and cross 3. exchange of dna occurs between chromosomes 4. four daughter cells are created that are haploid which of the following steps is least likely to occur during meiosis 1?