Professor Buchannan suffers from the liver disease called, cirrhosis.
Cirrhosis is a condition involving heavy scarring of the liver caused by chronic conditions and diseases, such as heavy alcoholism and hepatitis. All these chronic damages cause serious problems on the functioning of the liver. Throughout the years, professor's liver tried to repair itself from the damages and that is why the scars were formed.
Answer:
C
Explanation:
Positive natural selection, or the tendency of beneficial traits to increase in prevalence (frequency) in a population, is the driving force behind adaptive evolution. ... At the molecular level, selection occurs when a particular DNA variant becomes more common because of its effect on the organisms that carry it.
Answer:
When we say that a trait has been "selected for", this means that. individuals with that trait reproduce more than individuals without that trait.Explanation:
First question: ans= D
second question: ans=A
During replication, DNA is copied.
The answer is the first option: is copied
