Answer:
B
Explanation:
Light travels through medium but is fastest through vacuum, so C is wrong, and A is wrong. B is the correct answer.
DNA is copied during mitosis and when the two resulting copies of DNA are compared they are found to contain the same order of nucleotides is not the result of mutation in the DNA sequence of an organism.
Explanation:
Mutation is the process
It is caused by certain chemicals called mutagens or by environmental factors.
In mutation the nucleotide get change which eventually changes the protein product.
In mutation purine base gets mutated to purine base and pyrimidine base gets mutated to pyrimidine only.
A single change in nucleotide is called point mutation and the effect occurring because of it is called frame shift mutations.
In S phase there are checkpoints which ensure that DNA replication is accurate and when mitosis follows it equal distribution of DNA takes place between the two daughter cells hence no mutation will takes place.
Answer:
Life around us
Explanation:
Geology is what studies rocks, Chemistry is what studies chemicals, and Biology is what studies life.
<span><span>1.
</span>Knowledge of the researcher. It’s important to
consider the researcher’s capacity and capability in the field which he/she
wants to discover. In sense, it is in his proximity of study in order for
him/her to do such approach </span>
<span><span>
2.
</span>Tool used. Making sure whatever measurement the
investigator is using should be valid and reliable. Avoiding the possible
results to become biased and unstable due to errors which should be avoided.</span>
<span><span>
3.
</span>Sampling method. Obtain the samples which are
appropriate and that would cover the entire participants studied –not a half
but the entirety of what you want to study. Entirety means as much as the
possible sample covers.</span>
<span><span>4.
</span>Population. Knowing the involved participants
and respondents in the study, properly defining and clustering helps the study
avoid bias. </span>