Answer:
DNA sợi đôi hấp thụ kém mạnh hơn vì tương tác xếp chồng giữa các base.
Explanation:
Quá trình này được gọi là sự thay đổi siêu sắc tố. Các gốc purine và pyrimidine trong DNA hấp thụ tia cực tím.
Answer:
According to Darwin's theory of evolution, new species evolved as a result of natural selection.
Explanation:
- Darwin proposed that speciation could readily occur through the prolonged action of Natural selection.
- Natural selection allows the 'survival of the fittest' i.e. a more fit organism will have a better chance of survival than the less fit one.
- The result of Natural selection could be positive,negative or balancing.
- Evolutionary process in which the genetic changes confer a higher fitness to increase frequency of the organism over time in population is called positive selection.
- Evolutionary process in which genetic changes decreases the organism's fitness resulting in its disappearance from the population is called Negative selection.
- It may happen that a mutation benefits hetero-zygotes but not homo-zygotes and alleles maintain a intermediate frequency in population.This evolutionary process is called balancing selection.
Answer: Nitrogen
Explanation: just trust me
Answer:
D) lytic infection
Explanation:
During lytic infection, a virus enters the host cell, makes a copy of itself, and causes the cell to burst, or lyse.
They add nitrogen to the soul through their nodules !