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 ...
X inactivation is the dosage compensation mechanism in mammals whereby during embryogenesis of females a single X-chromosome is genetically silenced. Although most genes are subject to X ...
Within the rest of the genome are an estimated 70,000 genes. The single chromosome displayed here and those on the previous screen are shown in their most compacted state -- they're about to ...
This unmatched pair, known as the X and Y sex chromosomes, determines whether we are male (XY) or female (XX). A mother always provides a single X chromosome in her egg. Inherit an X from your ...
The nucleus of a germline stem cell undergoes two divisions, firstly separating homologous chromosomes and secondly separating chromatids. Haploid gametes contain 23 single chromosomes.