Difference Between Repetitive DNA and Satellite DNA

Repetitive DNA and Satellite DNA are two types of DNA repeats found in the genome. Repetitive DNA are moderately-repeated DNA sequences while Satellite DNA are highly-repeated, short DNA sequences. The main difference between repetitive and satellite DNA is the degree of repetition.

1. What is meant by satellite DNA?
2. What is meant by repetitive DNA?
3. What is the difference between satellite DNA Minisatellite DNA and microsatellite DNA?
4. What is the function of satellite DNA?
5. What are the two types of satellite DNA?
6. Is satellite a DNA?
7. What are the types of repetitive DNA?
8. Why is repetitive DNA important?
9. Which is an example of highly repetitive DNA?
10. Why is it called satellite DNA?
11. Is VNTR a Minisatellite?
12. Who discovered Minisatellite DNA?

What is meant by satellite DNA?

Satellite DNA: DNA that contains many tandem (not inverted) repeats of a short basic repeating unit. Satellite DNA is located at very specific spots in the genome (on chromosomes 1, 9, 16 and the Y chromosome, the tiny short arms of chromosomes 13-15 and 21 and 22, and near the centromeres of chromosomes).

What is meant by repetitive DNA?

Repetitive DNA: DNA sequences that are repeated in the genome. These sequences do not code for protein. One class termed highly repetitive DNA consists of short sequences, 5-100 nucleotides, repeated thousands of times in a single stretch and includes satellite DNA.

What is the difference between satellite DNA Minisatellite DNA and microsatellite DNA?

The main difference between microsatellite and minisatellite is that the repeating unit of a microsatellite consists of 2-6 base pairs while the repeating unit of a minisatellite consists of 10-100 base pairs. ... Microsatellite and minisatellite are two types of repetitive DNA in the genome.

What is the function of satellite DNA?

Satellite DNA forms essential structures of chromosomes, such as telomeres and centromeres, ensuring protection and stability of chromatin of these sites (Yunis and Yasmineh, 1971; Garrido-Ramos, 2017; Lower et al., 2018).

What are the two types of satellite DNA?

The two types are OwlAlp1 and OwlAlp2, and comparison of their consensus sequences with each other and with those of alpha satellite DNAs of other New World monkeys appears to support the hypothesis that OwlAlp2 is the 'standard' alpha satellite DNA.

Is satellite a DNA?

Satellite DNA (satDNA) is the highly repetitive DNA consisting of short sequences repeated a large number of times. It carries a variable AT-rich repeat unit that often forms arrays up to 100 Mb. The monomer length of satDNA sequences ranges from 150 to 400 bp in the majority of plants and animals.

What are the types of repetitive DNA?

Repetitive DNA can be divided into two classes: the tandem repetitive sequences (known as satellite DNA) and the interspersed repeats. The term satellite is used to describe DNA sequences that comprise short head-to-tail tandem repeats incorporating specific motifs.

Why is repetitive DNA important?

Generic repeated signals in the DNA are necessary to format expression of unique coding sequence files and to organise additional functions essential for genome replication and accurate transmission to progeny cells.

Which is an example of highly repetitive DNA?

DNA mini-satellite is an example of highly repetitive DNA.

Why is it called satellite DNA?

The name "satellite DNA" refers to the phenomenon that repetitions of a short DNA sequence tend to produce a different frequency of the bases adenine, cytosine, guanine and thymine, and thus have a different density from bulk DNA such that they form a second or 'satellite' band when genomic DNA is separated on a ...

Is VNTR a Minisatellite?

VNTRs are a type of minisatellite in which the size of the repeat sequence is generally ten to one hundred base pairs. Minisatellites are a type of DNA tandem repeat sequence, meaning that the sequences repeat one after another without other sequences or nucleotides in between them.

Who discovered Minisatellite DNA?

Discovering their high level of variability, Sir Alec Jeffreys developed DNA fingerprinting based on minisatellites, solving the first immigration case by DNA in 1985, and the first forensic murder case, the Enderby murders in the United Kingdom, in 1986.