HEREDITY
MUTATIONS
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
DNA that codes for a specific protein
|
|
|
DNA that does not code for a protein
|
|
|
Non coding DNA is DNA that ia not involved with making amino aicds, but control if a gene is expressed by having on and off switches
|
|
|
All of the above
|
Detailed explanation-1: -Definition. Non-coding DNA corresponds to the portions of an organism’s genome that do not code for amino acids, the building blocks of proteins. Some non-coding DNA sequences are known to serve functional roles, such as in the regulation of gene expression, while other areas of non-coding DNA have no known function.
Detailed explanation-2: -Exons are interchangeably used with coding sequences. They are nucleotide sequences present in mRNA that encodes proteins. Introns are the non-coding sequences that are usually spliced before translation. They are removed before the mRNA from the nucleus goes to the cytoplasm.
Detailed explanation-3: -There are two types of genes: protein coding genes and noncoding genes. Noncoding genes are an important part of non-coding DNA and they include genes for transfer RNA and ribosomal RNA.
Detailed explanation-4: -Transposable elements make up the major part of non-coding DNA. These include LINEs, SINEs, satellite DNA, and VNTRs.
Detailed explanation-5: -Non-coding DNA provides vital information to regulate this. This tight control of gene expression is important to cellular function, hence non-coding sequences are vital to ensure correct cellular function.