The answer for the question is C
Cells correct error in their DNA by three processes: proofreading (errors that occur during replication are rectified), mismatch repair (the mismatched base pairs are corrected just after the DNA replication), and damage repair mechanisms (including direct reversal by cell enzymes, excision repair by replacement or removal of the wrong base, and double stranded base repair by repairing the breaks in the DNA by homologous or non-homologous recombination methods). Pick according to this answer >)
Answer:
A - 8
B - 8
C - O
D - 26
E - 30
F - Fe
Explanation:
Use these things:
1. A = Z + N,
where A - mass number,
Z - atomic number,
N - number of neutrons
2. atomic number = number of protons
Answer:
It is valid because his experiment had clear variables.
Explanation:
He had clear variables and did everyhting the same for both plants, even though he had calcium in one and not in the other, which gives him a true and good result.
