Answer:
Single nucleotide deletion
Explanation:
Original DNA sequence:
A T A C G G T A
T A T G C C A T
Mutated DNA sequence:
A T C G G T A G
T A G C C A T C
In the mutated sequence, there is a nucleotide missing. It goes from ATACGGTA to ATCGGTAG. The A nucleotide is gone. This represents a single base pair deletion.
Even though it is only one base, this changes the way the entire sequence is interpreted. The DNA transcribed into an mRNA and then translated into a protein by reading triplet codons which correspond to specific amino acids.
So while the initial sequence would be read as:
ATA, CGG, TA...
The new sequence would be read as:
ATC, GGT, AG...
So the sequence of the protein is completely altered.
Answer:
1. During DNA replication, an open section of DNA, in which a DNA polymerase can replicate DNA, is called a replication fork.
2. After replication is complete, the new DNAs, called daughter DNAs, are identical to each other.
3. The enzyme that can replicate DNA is called DNA polymerase.
4. Okazaki fragmentsare the short sections of DNA that are synthesized on the lagging strand of the replicating DNA.
5. The new DNA strand that grows continuously in the 5' to 3' direction is called the leading strand.
Explanation:
DNA replication is a process that occurs during the interphase (S phase) of the cell cycle and in which DNA is replicated. DNA replication is semiconservative which means that each strand in the double helix (leading strand and lagging strand) acts as a template for synthesis of a new, complementary strand that will become daughter DNA.
DNA polymerase is the main enzyme of the DNA synthesis: it requires primer (short sequence of DNA) for the initiation and it performs its function only in one direction 5'-3'. Other enzymes involved in DNA replication are DNA primase, DNA helicase, DNA ligase, and topoisomerase.
Answer: 8.B 9.C 10.D 11.B
Explanation: 12.?
The population of fish would slowly begin to die out as the deeper the water the less dissolved gasses there are.
