CDNA does not have introns and therefore can be expressed in prokaryotic cells. cDNA libraries are most useful in reverse genetics where the additional genomic information is less use. Also, it is useful for subsequently isolating the gene that codes for that mRNA.
One way of learning about the earth's past is by studying fossils. When we find the fossil of a tropical fish, it means that at one time, there existed a warm ocean in the area. Palm trees thrived on a warm climate so we can also deduce that the environment at the time was also warm.
Answer:
Meteorology
Explanation:
It gives you a hint in the question
Ans. B). Interbreeding.
The process that involves production of animals with desired traits from the mating between members of closely related organisms, is known as inbreeding.
Inbreeding is very common in cattle farming as it provides farmers the best possible livestock as inbred cattle show all desired and advantageous traits, such as high milk production.
Thus, the correct answer is option (B).