For decades, technical limitations and entrenched expectations shaped chromosome counts, illustrating how accepted scientific ideas can persist despite conflicting evidence.

Every living being possesses a particular number of chromosome pairs that it inherited from both parents. In human beings, for example, there are 23 pairs, i.e., 46 chromosomes altogether, tomatoes ...

Chromosome number variation underpins much of the genomic diversity observed in vascular plants, arising principally through two processes: polyploidy, the duplication of entire chromosome sets, and ...

"I've memorized 'meiosis.' But when asked about the number of chromosomes, I get it wrong."Have you ever felt that way when ...

This video segment from NOVA: "Judgment Day: Intelligent Design on Trial" reveals how genetic evidence helped to confirm an important component of Darwin's theory of evolution by natural selection: ...

Scientists have sequenced the genome of the Atlas blue butterfly for the first time and confirmed it holds the highest chromosome number among multicellular animals. The butterfly lives in the ...

Human cells are usually diploid—they contain two sets of chromosome. Cells in which one chromosome is missing from the duplicated chromosome set are generally not viable. For a long time, the ...

Cancer cells with extra chromosomes depend on those chromosomes for tumor growth, a new Yale study reveals, and eliminating them prevents the cells from forming tumors. The findings, said the ...

Repetitive DNA and the D1 protein help matching fruit fly chromosomes recognize one another before eggs form.