According to the International Union for Conservation of Nature (IUCN) giraffe numbers across the continent of Africa fell 40% b
etween 1985 and 2015. The main threats to the giraffe population include a shrinking habit, conflict, and poaching. Checking the data, we see that while four subspecies have declining populations, four subspecies have growing populations. This is a modern-day example of natural selection at work. What elements of natural selection are at work here? A) Environmental conditions reduce the population numbers; only the fittest subspecies are able to survive. B) Overpopulation exists in a shrinking habitat; some subspecies decline in number; differential reproduction occurs. C) The death rate of some subspecies is elevated due to conflict and poaching; death is random; differential reproduction occurs. D) Genetic variation exists in the giraffe population across Africa; only those animals with a specific gene pool, represented by certain subspecies, can survive. Eliminate
Every living thing has the same genetic roots, that with fossils and proof of adaptation to environments, and you have your proof, there are soo many other sources of evidence too.
Infectious diseases are caused by the passing of one person to another. Corona is an example. Noninfectious diseases, they are just spread by pathogens. Good luck!
<span>When a complete set (genome) of chromosome is added or subtracted the condition is called Euploidy. When there is addition or deletion of a single member chromosome the condition is called Aneuploidy.</span>
