To South Africans the Braai is as important an implement in the household as an oven is to us Brits. Simply put, a Braai is a wood or charcoal fuelled barbecue, but more than that it is an incredibly versatile and exciting way to cook which provides a great social hub for a gathering or celebration!o South Africans the Braai is as important an implement in the household as an oven is to us Brits. Simply put, a Braai is a wood or charcoal fuelled barbecue, but more than that it is an incredibly versatile and exciting way to cook which provides a great social hub for a gathering or celebration!
Humans normally have 46 chromosomes, which come in 23 pairs, as well as some mitochondrial DNA. From the mitochondrial DNA, and 22 of the 23 other chromosome pairs, there is nothing to tell you whether the DNA came from a male or a female. The genetic difference between males and females resides in that last chromosome pair, the sex chromosomes. At the sex chromosomes, women have two X chromosomes, while men have one X chromosome and one Y chromosome. So, if you have a discrete source of your DNA sample, like a hair, you could do a couple of things. You could test it for the presence of Y-chromosome genetic material.
Differences: 1  Mitochondrial DNA does not have histones while nuclear DNA does. 2  Mitochondrial DNA is circular while nuclear DNA is linear but both of them are double stranded. 3  Mitochondrial DNA is inherited from mother only while nuclear DNA from the parents. 4  Nuclear DNA is diploid and mt-DNA is in a state of ploidy. 5  In nuclear DNA the genes are ...his chromosome is much shorter and codes for proteins that are used in metabolic purposes. Another main difference is that mitochondrial DNA is only transmitted from mother and never from the father while nuclear DNA is inherited from both, mother and father.