C.
1)<span>Pigs digestive tracts and nutritional needs are very similar to humans.
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2)<span>Pigs also have hearts that are similar in size and makeup to the human
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heart. Pig heart valves are used to replace defective human heart valves.
3)</span><span>Answer "Pig" DNA is most similar to Human DNA..
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<h2>Microbes and ruminants relation</h2>
Explanation:
The mixture of microbes allows the host animal to produce a much wider variety of digestive enzymes, far more than the host could encode in their own genome
- The microbes in the gut of ruminants include bacteria,fungi and protozoa
- These microbes helps the ruminant animals to digest food,without the microbes these animals would die
- The microbes break down feed to produce volatile fatty acids, which are used by the cow(ruminant animal) as energy for maintenance and milk production