Answer: The transfer of traits (characters) from one generation to another is called as inheritance.
The Huntington's disease is common in people of Africa because this disease is very frequent among the Dutch descent population or Afrikaner in the South Africa, as the gene for this disease is unusually very common among the small population of the original Dutch colonists. The disease has been so common in the generations of the Afrikaner since last 14 generations. It is less prominent now as compared to how it was previously.
Leaf need water and minerals and root helps to take it from soil and passes it through stem.
stem also holds leaf in place.
hope this helps
The evaluation of their DNA and short tandem repeats will let them know if the birds are related or not. The genetic linkage will provide information about their common ancestry as well as if they belong to the same species, or are closely related species.