How would a mutation affect a strand of DNA?

Answer 1

It would alter the sequence of amino acids, resulting in a lightly different genetic code. Replacing A with G for example.

Answer 2

it depends on the form of mutation. Point mutations are where the mutation is only one DNA nucleotide either replaced, added or deleted. If the nucleotide is replaced (A for a G) it may cause no effects because of the redundancy in the genetic code certain codons (groups of three nucleotides) code for the same amino acid (TTT and TTG both code for Phenylalanine). The Substitution may cause a single change to the DNA which results in a new amino acid instead of the original one (TTT codes for Phe and TTA codes for Leucine). This is what causes Sickle Cell anemia. If the base substitution affects the start codon the protein may not be created, or if the stop codon is affected the protein may be longer.

If the point mutation is an addition or deletion of a nucleotide the result is everything "downstream" of the mutation is altered. This is because it alters the reading frame of the rest of the groups of threes.

Other mutations are called chromosomal mutations and involve large sequences of DNA being flipped (inversions) or translocated from one location to the next (jumping genes)

Answer 3

A mutation would desire to take place in an area that would not code for something. A mutation can take place that codes for the comparable amino acid. A mutation can substitute one amino acid into a matching amino acid and so for this reason would not critically regulate the proteins shape. factor mutations tend to no longer do lots injury till you turn to very different amino acid. one that makes sulfer bounds, Hydrophilic with hydrophobic. Deletions, additions, and replacing DNA from different chromosomes do greater injury. Your changing alot of Amino acids. additionally some protein has assorted copies. in case you broken a DNA sequence, yet there are different copies, the wear and tear won't be undesirable, via fact the physique has decrease back up. the subject is the recent DNA sequence will now code for some thing else, that would desire to do injury, and in case you like quite some 1 protein, injury to one reproduction would desire to impact the quantity your physique makes. additionally the different element is that if one cellular is mutated and it is no longer maximum cancers, so what, you have different cells. If an egg or spem is mutated, that's much greater significant.

Answer 4

Assuming you mean human DNA, it could have a wide range of results, from no effect at all to spontaneous abortion of a fetus (mutation causing defects so extreme that it's incompatible with life) or birth defects or a predisposition to cancer or about a million different things.

In plants and other life forms, it can just cause an odd-coloring to a flower or different eye color in an animal... purposeful mutation causes hybrids...