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Genes are segments of DNA. DNA is made up of polymer of nucleotides joined together. When there is an alteration in the sequence of nucleotides, gene mutation occurs.
gene mutation
sequence of subunits in DNA.
A point mutation is best described by this statement. Point mutations occur when there is a change in a single nucleotide base in the DNA sequence, which can lead to changes in the corresponding amino acid sequence of a polypeptide during protein synthesis.
A point mutation refers to a change in a single nucleotide in a DNA sequence. In the sequence AGGCGTCCATGA, any alteration of a single base pair would qualify as a point mutation. For example, if the first 'G' were replaced with an 'A', the mutated sequence would be AGGCGTCCATGA → AAGCGTCCATGA.
A permanent alteration of the nucleotide sequence can impact genetic expression by changing the instructions encoded in the DNA. This can lead to changes in the production of proteins, which are essential for various cellular functions. Mutations can result in abnormal or non-functional proteins, affecting the normal functioning of cells and potentially leading to genetic disorders or diseases.
The DNA sequence of an entire chromosome affected by a mutation would have specific changes in the sequence of nucleotide bases. These changes can vary in size and location, leading to alterations in the genetic information carried by that chromosome, which can impact gene expression and protein production. This alteration can result in genetic disorders or diseases.
No DNA sequence wont have U (uracil), so it is an RNA sequence!
The mRNA base sequence corresponding to the DNA sequence acgtt is ugcaa. The mRNA sequence is complementary to the DNA sequence, with thymine (T) in DNA being replaced by uracil (U) in mRNA.
TACA
the DNA sequence coding for the protein, leading to a mutation. This mutation can cause a change in the amino acid sequence, affecting the protein's structure and function. Defective protein synthesis can also result from errors in the transcription or translation processes.
If the DNA sequence is ACT, the complimentary mRNA sequence would be UGA