chromosome number

American  

noun

Genetics.

1. the characteristic number of chromosomes contained in the cell nucleus of a given species.

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chromosome number British  

noun

1. the number of chromosomes present in each somatic cell, which is constant for any one species of plant or animal. In the reproductive cells this number is halved See also diploid haploid

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Etymology

Origin of chromosome number

First recorded in 1905–10

Example Sentences

Genomic sequencing also revealed that D. catalonica has a haploid chromosome number of four autosomes plus one X chromosome, while D. tilosensis has six autosomes and one X chromosome.

From Science Daily

If such errors occurred in organoids that had low variability in chromosome number, then cell division often stopped or the cells died.

From Nature

These results suggest that chromosome-number variability in tumour cells is the product of the rate of development of chromosomal instability and the ability of cells of a given tumour type to tolerate further changes in chromosome number or structure11.

From Nature

Live-cell imaging indeed revealed that organoids with a high variability in chromosome number were better able to withstand errors during cell division than were organoids that had low chromosome-number variability.

From Nature

Simply fusing the ends of two chromosomes is therefore not a viable strategy for reducing chromosome number because it would produce chromosomes containing two centromeres.

From Nature