Homozygous<span>. An organism that has two identical alleles for a trait.</span>
It's B. The cheetah populations are less likely to be able to adapt to environmental changes.
All living creatures are classified into systems and sub-systems based on their similar characteristics. They are divided from bigger groups into smaller groups based on the detail of their similarities i.e. how they look, move, reproduce and how they relate to each other. A practical way of understanding the classification of living organisms is that organisms are linked to other similar organisms via family trees. The classification of all living creatures includes at least four levels: order, families, genus and species.
Oxygen.
Oxygen was fatal when organisms started using photosynthesis, this event was known as the Great Oxidation Event.
Since they are now able to genetically isolate favorable traits they can "clone" prize-winning livestock and make the production as efficient as possible
