Answer:
C. internal fertilization
Explanation:
The release of eggs and sperm into the water is known as spawning.
Answer:
D. Meiosis forms four cells all with different genetic material
Explanation:
They are haploid cells and each cell only had one set of chromosomes. Meiosis results in variation.
Answer: Option 'C' is correct.
Explanation:
Every cells change with ageing.
As cell age they tend to become larger and as the body ages it tends to have fewer cell dividing.
As the age of cells increases, cells become less able to divide and multiply.
Due to which when an middle aged or old aged person get wounded, their healing takes so much of time as compare to child because new cells do not develop easily in old age people. It takes time to develop new cell to heal their wound.
Hence, option 'C' is correct.
By examining the infected cells it was found that they contained DNA, which demonstrated that the DNA molecule is the phage's genetic material. Since the phage DNA entered the infected cell, it would be logical that the DNA is the genetic material. A molecules does not have to be labeled for it to be genetic material.
20, as there are only 20 amino acids, which are what make up proteins
