How is all of that DNA packaged so tightly into chromosomes and squeezed into a tiny nucleus? Histones are a family of small, positively charged proteins termed H1, H2A, H2B, H3, and H4 (Van Holde ...

Thus, DNA strand identity is acquired during or ... Centromeres are composed of condensed and largely transcriptionally inactive chromosomal regions known as heterochromatin.

A study of artificial human and chimpanzee nerve cells revealed how faster-evolving DNA gives neurons the ability to build ...

How did humans evolve brains capable of complex language, civilization, and more?       The answer could lie in exceptional DNA. Scientists at UC San Francisco found that parts of our chromosomes have ...

Gene editing techniques may eventually allow trisomy to be treated at the cellular level, according to an in vitro ...

“This is the first comprehensive study of the frequency of extrachromosomal DNA found in diverse cancer types,” Charles Swanton, who studies cancer diversity at the Francis Crick Institute in the U.K.

Chromosomes are thin strands of DNA (deoxyribonucleic acid). A gene is a short length of DNA found on a chromosome that codes for a particular characteristic or protein. Alleles are different ...

Decades ago, researchers showed that Down syndrome (also known as trisomy 21), was caused when individuals carried an extra ...

Regions of DNA that do not code for proteins may also be considered genes if they produce noncoding RNA with biological functions. Protein-coding versus noncoding genes When deciding the number of ...

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 ...

Blood screening to detect chromosomes offering less protection against age-related brain diseases may warn you of future health problems ...

"Using genome sequencing and fluorescently labeled DNA analyses, we reevaluated the child's genomic condition and found a highly complex reshuffling of chromosomes 3 and 5 resulting in 5q14.3 ...