How do scientists find their way around a chromosome? With chromosome maps called idiograms, researchers can pinpoint the locations of genes and locate abnormal gene forms. Aa Aa Aa Most ...

Each human cell contains 23 pairs of chromosomes that carry DNA within their nucleus. The X and Y chromosomes, commonly referred to as the sex chromosomes, are one such pair. They determine the ...

When bacterial DNA is labeled with radioactive atoms, it takes its own picture. Autoradiographs reveal that the bacterial chromosome is a single very long DNA molecule and show how it is duplicated ...

The development of an accurate and sensitive method to screen all telomeric regions has important ramifications for the clinical diagnosis of both constitutional and acquired telomeric abnormalities.

In females, meiosis is initiated during fetal development. Digital micrographs of fetal ovary at embryonic day 14.5 hybridized to the antisense Spo11 probe are shown here in panels a and b. — Dark ...