Our Gallery

Browse our collection of health & medical images and highlights

Illustration of a DNA double helix

Fluorescence microscopy image of chromosomal crossover points (chiasmata) visible during meiotic prophase I in stained wheat pollen mother cells.

Illustration of a sequence file being converted into another format

Diagram illustrating the Holliday junction intermediate formed during homologous recombination, showing branch migration and the four-armed DNA structure.

Illustration of short sequencing reads aligned to a reference genome

Electron micrograph of Rad51 nucleoprotein filament assembled on single-stranded DNA during strand invasion in the homology-directed repair pathway.

Illustration of two chromosomes exchanging a short DNA segment

Visualization of gene conversion tract lengths mapped across the human genome using high-resolution SNP array data from trio sequencing studies.

Illustration of a codon table grid with highlighted cells

Immunofluorescence image of MLH1 foci marking crossover sites on mouse spermatocyte chromosomes spread during meiotic prophase.

Illustration of a genome browser with tracks and variant markers

Schematic of biased gene conversion showing GC-AT mismatch correction in heteroduplex DNA and the resulting shift toward higher GC content.

Illustration of a DNA double helix

Pulsed-field gel electrophoresis pattern of yeast chromosomes demonstrating double-strand break induction at the MAT locus during mating-type switching.

Illustration of a sequence file being converted into another format

Crystal structure of the MutS mismatch repair protein bound to a G-T mispair in duplex DNA, an early step in heteroduplex correction during recombination.

Illustration of short sequencing reads aligned to a reference genome

Population genetics heat map depicting recombination hotspot intensity and gene conversion frequency across human chromosome 6 in the HapMap dataset.