Chromosome bands as observed with Q-, G-, and R-staining methods. Autosomes are
ID: 91055 • Letter: C
Question
Chromosome bands as observed with Q-, G-, and R-staining methods. Autosomes are numbered in order from 1 to 22, and Y and X are listed separately. Short arms of chromosomes are designated p and long arms q. Regions are numbered from 1 (next to centromere) to the distal end of each arm, and bands are numbered within the regions from the centromere end to the distal end of each arm. (Paris Conference [1971]: Standardization in human cytogenetics. Birth Defects: Original Article Series, VIII[7], 1972. The National Foundation, New York.) short, distal, chromosomal portions are called satellites. (Do not confuse these chromosome satellites and secondary constrictions with satellite DNAs, which are a category of repetitive DNA.) Which of the human chromosomes have satellites? ___Explanation / Answer
Satellites are explained here as the short, distal, chromosomal portions, this is part which is separated by the secondary contrictions from the main body of the chromosomes.
It has a characteristic as nucleotide repeat length is high, they are organized in a large cluster in chromosomes. Interestingly they does not help making the RNA, as they are just a repetitive DNA sequences.
They always seems to be present near centromere and telomeres, especially they thrive in Y chromosome.
They are located here on 1, 9, short arm of 13, 14, 15, 21 and 22, also they are located on nmunber 16 chromosome and Y allosome.
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