The answer is 46 chromosomes.
Before mitosis, cell duplicates its DNA material so there are 46 chromosomes in duplicates and in total there are 46 x 2 = 92 sister chromatids. During mitosis, sister chromatids first join in the middle of the cell and then separate towards the opposite sides of the cell. After they separate, there are 46 sister chromatids on the one side and 46 sister chromatids on the other side. Each sister chromatid at the end of cytokinesis actually represents the chromosome of the newly formed daughter cell.
The layers above would be not as old and the layers below would be the older layers.
The correct term to fill in the blank would be "oprn adoption". An open adoption may involve anything from a minimal exchange of information to extensive contact with the birth mother before and after the child is born. It is a form of adoption wherein the adoptive families and the biological family would have rights to a certain degree of the personal information of the adoption process and having an option of contract. In this type of adoption, the adoptive family would have all the rights to be the legal parents however the biological could have a the right to have a contract in different forms like sending photos of the child, personal visits and sending messages.
Hot spots, Divergent plate boundaries and Convergent plate boundaries