What is the point of attachment of the fibers to the chromosomes called?

The centromere is the point of attachment of the kinetochore, a protein structure that is connected to the spindle fibres (part of a structure that pulls the chromatids to opposite ends of the cell).

What is the point of attachment of chromosome?

Each chromosomes in its condensed form as visible during the start of cell division, consists of two chromatin fibre joined at some point along its length. This point of attachment is called as centromere and it appears as a small constricted region.

What is the name of the point of attachment for replicated chromosomes?

Centromere, structure in a chromosome that holds together the two chromatids (the daughter strands of a replicated chromosome). The centromere is the point of attachment of the kinetochore, a structure to which the microtubules of the mitotic spindle become anchored.

What is attaching to the chromosome?

The microtubule-based structure called the spindle is responsible for chromosome segregation during mitosis. Spindle microtubules attach to chromosomes through unique structures called kinetochores that form as paired structures adjacent to centromeric heterochromatin (Fig. 1).

What do you call the point of attachment of the two sister chromatids?

Answer: Because each duplicated chromosome consists of two identical sister chromatids joined at a point called the centromere, these structures now appear as X-shaped bodies when viewed under a microscope.

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What is the point of attachment between two sister chromatids?

centromeres. … that holds together the two chromatids (the daughter strands of a replicated chromosome). The centromere is the point of attachment of the kinetochore, a structure to which the microtubules of the mitotic spindle become anchored.

What happens if spindle fibers don’t form?

For herbicides with this mode of action, the prophase sequence is normal, but without the spindle apparatus, chromosomes are unable to move into the metaphase configuration and daughter chromosomes cannot migrate to their respective poles.

Can a chromosome have one chromatid?

When fully condensed, replicated chromosomes appear as thick X-shaped structures that are readily observed under the microscope (see figure below). Chromosomes can have 1 or 2 chromatids, depending on whether they have replicated.

What is P and Q in chromosome?

q arm of a chromosome: The long arm of a chromosome. … Origin of p and q as chromosome arms: The symbol “p” was chosen to designate the short arm because “p” stands for “petit”, “small” in French. The letter “q” was selected to signify the long arm merely because “q” is the next letter in the alphabet.

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