某些发育信号不仅能塑造人类胚胎,还在维持机体遗传蓝图方面发挥着重要作用,但这些信号也会阻断基因组的改变,即所谓的镶嵌现象(mosaicism)。近日,一篇发表在国际杂志 Nature Communications 上题为 “Developmental signals control chromosome segregation fidelity during pluripotency and ...
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 ...
Typically, females have two X chromosomes (XX), and males have one X and one Y (XY). However, some males have an additional X chromosome (XXY), and some females have an extra X too (XXX). The ...
Chromosome rearrangements caused by chromothripsis occur in 30%-40% of all cancers and are commonly found in aggressive tumors such as sarcomas, glioblastomas, and pancreatic cancer. Chromothripsis ...