Answer: The correct answer is -
The new DNA molecule consists of one new strand and one old strand of DNA.
DNA replication is a process of formation of two molecules of DNA from a single DNA molecule (which is double stranded).
In this process, the two DNA strands of the original DNA are first separated so that the template strands are exposed.
Using the template strands, enzyme DNA polymerase adds nucleotides (in the direction 5' to 3') in a complementary manner-
For adenine, thymine, guanine, and cytosine in the template strand, thymine adenine, cytosine, and guanine are added respectively.
The new DNA molecule consists of one new strand and one old strand of DNA. That is why, it is also called semiconservative replication.
Thus, option third is the right answer.
Answer:
Root hair cells are alive and therefore need energy, which is why root hair cells contain many mitochondria in them. Root hair cells don't contain chloroplasts. Chloroplasts are used by the plant to make food using light energy. Since the roots aren't exposed to any form of light, they have no need for chloroplasts.
Answer:
C- it helps develop scientific consensus by making sure new ideas are critically evaluated.
Well a mutation is like a change in the DNA and so if there was a mutation in the antártica fish, something in their genes would change. If that mutation has a positive effect on it, then that mutation would be passed down to the generations of fish, helping that fish with its survival or something
