A. Adult stem cells is the correct answer.
The adult stem cells consist of rare mature tissues, which are limited to differentiating into different cell types of their tissue of origin.
Proteins are made from ribosomes and the rough E.R has ribosomes attached to it modifyies and transports proteins
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<span>to nourish the young using milk </span>
In Meiosis, "crossing over" occurs during prophase I. This has genetic information being switched on chromosomes. So when telophase II comes along, there is extra genetic variation on the chromosomes and therefore the children will be genetically different.