2006-10-09 09:19:01 · 5 answers · asked by YuL 1 in Science & Mathematics ➔ Biology
The centromere is a region on chromosomes with a special sequence and structure. The centromere plays a role in cellular division and the control of gene expression.
2006-10-09 09:22:07 · answer #1 · answered by scribblestick 2 · 0⤊ 0⤋
The centromere is a region on chromosomes with a special sequence and structure. The centromere plays a role in cellular division and the control of gene expression.
Function
A centromere functions in sister chromatid adhesion, kinetochore formation, pairing of homologous chromosomes and is involved in the control of gene expression.
A centromere is the region where sister chromatids join in the double chromosomal structure during mitosis, prophase and metaphase. The centromere is also where kinetochore formation takes place: proteins bind on the centromeres that form an anchor point for the spindle formation required for the pull of chromosomes toward the centrioles during the anaphase and telophase of mitosis.
Aberrant centromeric function can lead to improper chromosomal alignment and segregation, resulting in aneuploidy and conditions such as Down syndrome.
You could get more information from the link below...
2006-10-10 06:57:11 · answer #2 · answered by catzpaw 6 · 0⤊ 0⤋
A centromere functions in sister chromatid adhesion, kinetochore formation, pairing of homologous chromosomes and is involved in the control of gene expression.
A centromere is the region where sister chromatids join in the double chromosomal structure during mitosis, prophase and metaphase. The centromere is also where kinetochore formation takes place: proteins bind on the centromeres that form an anchor point for the spindle formation required for the pull of chromosomes toward the centrioles during the anaphase and telophase of mitosis.
Aberrant centromeric function can lead to improper chromosomal alignment and segregation, resulting in aneuploidy and conditions such as Down syndrome.
hope that helps
2006-10-09 16:25:43 · answer #3 · answered by Anonymous · 0⤊ 0⤋
Each chromosome consists of a set of duplicate chromatids that are held together by the centromere. The centromere is the point of attachment to the spindle fibres (part of a structure that pulls the chromatids to opposite ends of the cell). During the middle stage in cell division, the centromere duplicates, and the chromatid pair separates; each chromatid becomes a separate chromosome at this point.
2006-10-09 16:24:45 · answer #4 · answered by Britannica Knowledge 3 · 0⤊ 0⤋
It is the part where two chromatids of a chromosomes get attached.
2006-10-09 18:57:02 · answer #5 · answered by moosa 5 · 0⤊ 0⤋