A. gene flow because I really don't know if I'm right but let me know if I'm wrong.
Answer and Explanation:
During DNA replication, the genetic information is duplicated to ensure that each cell in an organism has a complete and correct copy of the organism's genome. This occurs during each instance of cell division. This way two identical DNA molecules are formed from the original single molecule. Each of the new DNA molecules gets incorporated into one of the two nuclei formed just prior to separation of the daughter cells.
Answer:
The diversity of species
Explanation:
Darwin investigated the diversity of species by observing the physical differences between them. He concluded that all the species came from the same ancestor in common. And that the evolution is given by natural selection (or adaptation to the environment). Only specimens more adapted to the environment could survive, reproduce and pass their genetic traits to their offspring.
For example, the long neck of the giraffes is due to the fact that only the highest ones reached the leaves of the trees for food and with that they managed to survive.
Answer: Option (A) and (D) are correct.
Explanation:
Atomic number means the number of protons holded by an atom. On the other hand, atomic mass means the sum of total number of protons and neutrons holded by an atom.
For example, in an isotope of oxygen as oxygen-15 with an atomic number 8 means that there are 8 protons.
So, number of neutrons present in oxygen-15 will be as follows.
Atomic mass = no. of protons + no. of neutrons
15 = 8 + no. of neutrons
no. of neutrons = 15 - 8 = 7
Hence, this isotope of oxygen atom has 8 protons and 7 neutrons.
Answer:
"nucleic acids", "deoxyribose sugar, and the "phosphate"