A chromosome is a single, long molecule of DNA. These highly organized structures store genetic information in living organisms. Small sections of the chromosome, called genes, code for the RNA ...

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 ...

The X and Y chromosomes, commonly referred to as the sex chromosomes, are one such pair. They determine the biological sex, reproductive organs, and sexual characteristics that develop in a person.

开发新型免疫靶点是提升免疫治疗效果的关键途径之一。徐瑞华教授研究团队在国际范围内率先提出了针对晚期胃癌的抗 CLDN18.2 治疗方案（免疫机制），为 CLDN18.2 阳性且 HER2 阴性的晚期胃癌患者开辟了新的治疗路径，显著改变了临床实践。此外 ...

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 ...

Humans possess two kinds of chromosomes, labeled X and Y. Typically, females have a pair of X chromosomes in every cell, ...

The biological sex of a human being is determined by which chromosomes make up that baby's genetic material. Females usually have two X chromosomes, while males tend to have one X and one Y ...

Live imaging of embryos at different stages. Chromosomes are labeled in magenta. 4-cell sister blastomeres are shown, along with 3D-reconstructed images of 2-to-4-cell and 4-to-8-cell divisions.

All men and only men have a Y chromosome. This biological fact allows us to trace back in time a direct, largely unchanged genetic line of inheritance from father to son. Every person, male or ...

Once upon a time, the Y chromosome — responsible for determining male sex — was as robust as its X counterpart. Fast forward a few million years, and it’s now a slimmed-down version of its ...

These include birth defects, fertility problems, and blood disorders. They examine the chromosomes present in blood, amniotic fluid, and bone marrow using slide preparations and tissue cultures.