Best answer: What would happen during mitosis if the centromere was deleted from a chromosome?

Chromosomes that lack centromeres segregate randomly during mitosis and are eventually lost from cells. At the other extreme, chromosomes with multiple centromeres are subject to fragmentation if the centromeres become attached to opposite spindle poles by way of their kinetochores.

What do centromeres do in mitosis?

1 Centromeres

Centromeres are chromosomal regions that mediate kinetochore assembly and spindle attachment during cell division. Serving as the attachment points of microtubules, they are responsible for guiding the movement of chromosomes during mitosis and meiosis, assuring accurate chromosome segregation.

Why is centromere required?

Centromere is required for the movement of chromosomes towards the pole. … The centromere is also the point of attachment of the kinetochore, a highly complex multi protein structure to which the microtubules of the spindle fibers attach. So, the correct option is ‘Movement of chromosomes towards poles’.

What happens to centromeres after mitosis?

Chromosomes that lack centromeres segregate randomly during mitosis and are eventually lost from cells. At the other extreme, chromosomes with multiple centromeres are subject to fragmentation if the centromeres become attached to opposite spindle poles by way of their kinetochores.

What will happen if a chromosome loses its centromere?

Without the centromere, no kinetochore would form and cells could not segregate their chromosomes. Thus, the centromere is of crucial importance for chromosome segregation and mitotic control.

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How many centromeres are in a chromosome?

Note: A chromosome contains 2 chromatids and a centromere. DNA (deoxyribonucleic Acid) is the hereditary material of living beings present in the chromosome. In people, DNA is found in practically every.

What is the importance of chromosome segregation?

Chromosome segregation is another complex process because the cell has to ensure that exactly one set of duplicated chromosomes is transferred to each of the two cells produced during cell division. In both yeasts, chromosome segregation occurs intranuclearly, meaning that the nuclear envelope does not break down.

What happens if mitosis goes wrong?

Mistakes during mitosis lead to the production of daughter cells with too many or too few chromosomes, a feature known as aneuploidy. Nearly all aneuploidies that arise due to mistakes in meiosis or during early embryonic development are lethal, with the notable exception of trisomy 21 in humans.

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