What phase of meiosis that cause the most variation in the four resulting daughter cells are?

Answer 1

"Sexual reproduction promotes variation because each gamete (sperm or egg) contains a mixture of genes from two different parents. Crossing-over and Independent assortment promote variation. During prophase of meiosis, crossing-over results in chromosomes that have some genes from one parent and some genes from the other parent. Individuals contain two sets of each chromosome but gametes contain only one set. For each homologous pair of chromosomes, one chromosome will be randomly selected for each gamete formed (independent assortment). Variation is necessary for natural selection. Recall that natural selection favors individuals with characteristics that are best adapted to their environments. Variation is therefore necessary for species to become adapted to their environment and it enables them to change when the environment changes."

Answer 2

Prophase I is the phase that results in the most genetic variation in the four resulting haploid cells. During prophase I, the homologous pairs of chromosomes line up together and form tetrads, during which they undergo synapsis and exchange pieces of each other so that every single chromosome ends up with some DNA from the father and some from the mother.

Answer 3

Crossing over during prophase I of meiosis causes the most variation in the four resulting daughter cells. This process involves the exchange of genetic material between homologous chromosomes, leading to new combinations of alleles and increased genetic diversity among the daughter cells.