C. It causes the Endonucleus to ask on the RNA and DNA
Answer:
option c. viroid control
Explanation:
The chestnut tree in Europe is infected by a fungus called <em>Cryphonectria parasitica </em>that<em> </em>causes a disease called chestnut blight. The disease is controlled by a biological control method called hypovirulence.
The hypovirulence is a virus that attacks the fungal pathogen (<em>Cryphonectria parasitica </em><em>)</em> of chestnut tree. This fungal virus decreases the ability of fungal pathogen to cause chestnut blight disease. This technique prevents the chestnut plant after huge destruction of it in Europe.
The pathogen that have virus is introduced naturally over the plant. This reduces the infection and allows the natural growth of trees. Thus, option C is correct.
Answer:
63 chromosomes.
Explanation:
Mules are produced by the breeding between the female horse and male donkey. Mule is a sterile animal that are used to carry heavy loads at the hilly areas.
Mule gets 32 chromosome from the female horse and 31 chromosome from the donkey. Mule has total 63 chromosome as horse has total 64 chromosome and donkey has 62 chromosome and half chromosome from the father and mother is inherited in the offspring.
Thus, the answer is 63 chromosome.
Answer:The outer core
Explanation: It’s the liquid largely iron layer of the earth that lies below the mantle.