If the nucleotide sequence of a section of DNA that codes for a particular trait is altered,which has occurred

Question

A- Transcription
B- A new adaptation
C- a mutation
C- Natural selection

please can someone give me a hint? I am real bad at this topic.

Answer 1

Mutation . . . which is any error in the DNA sequence

Answer 2

Yes you have to play their learning game, and answer C. A parroted answer, not necessarily given you any real education on the subject.
It could be A! Because we still don't know what all, regulation, the non-coding DNA does or is capable of. It could be capable of altering sequences of DNA, in response to hormonal or other inputs. Making new adaptations. But this makes the chromosomes an even more complex design, then we would like to entertain!
It we are just defining mutation, as change. It really doesn't tell us much of anything. As "altered" also means changed.
Then the question just reads thus. "If the nucleotide sequence of a section of DNA that codes a particular trait is altered (Changed), which has occurred.
A- Transcription
B- A new adaptation
C- (a mutation) or change
D-Natural selection
Now are you thoroughly confused?

Answer 3

The nucleotide sequence of the DNA is a code indicating a particular protein to be built. Each three-nucleotide triplet (AGA, GTC, GAA, or whatever) is a code for a particular Amino Acid which will be added to the sequence of AAs that make up the protein. If you change the nucleotide sequence there's a chance that the original Amino Acid(s) will no longer be what the new triplet codes for, and therefore the protein will be different. This may make the protein work differently, not as well, or not at all, in which case the body's functioning or development may be changed. This is not transcription, right? That's the copying process by which the nucleotide sequence of the DNA is read to make new products. It's not a new adaptation, although it may possibly result in a new adaptation - that's a change in the organism itself or its behavior in response to a particular stress that allows it to cope better. It's certainly not Natural selection; that's the process by which organisms are 'tested' and the ones that pass the test the best get to have the most kids and therefore come to make up most of the neighborhood population. By elimination it must be 'a mutation' (ie a change). Since you've already had the answer casually handed to you without any explanation, I figured you deserved more than just a hint, so that you might better understand the topic. Hope this helps!

Answer 4

C: Mutation

Lets look at the other answers:
A. Transcription. This is the first part of gene expression in which the DNA is "transcribed" into mRNA that relays information to the ribosomes in the cytoplasm where the information is then translated into the amino acids (primary structure) sequence of the protein. There is NO altering of any sequences in the process.

B. Adaption? This defined as a trait favored by natural selection. While mutations are the driving force of evolution, (change in the inherited traits of a population from generation to generation) allowing organism to adapt to their environment, Adaption is NOT synonymous with adaption.

D: Natural selection is the process by which favorable traits that are heritable become more common in successive generations of a population of reproducing organisms, and unfavorable traits that are heritable become less common due to the fact that unfavorable traits cannot survive and reproduce as well, again this is NOT mutation, although new traits are often created by mutation due to changes in he DNA.

Answer 5

if something (the nucleotide sequence) has become different from what it usually is, then it has mutated.

so.....the answer is Mutation

Answer 6

C. A mutation.

Answer 7

C- a mutation

Answer 8

C- a mutation

Answer 9

Hey,

A hint would be C :)

Good luck!

Answer 10

i think it is B and C both.