Fig. 3: Homologous gene heatmap and shared proportions between cattle horn buds and deer antlers.
From: Gene expression supports a single origin of horns and antlers in hoofed mammals

a Heatmap of log fold changes (log FC) for the differentially expressed genes that mapped as homologous (expressed in the same direction in at least one bovid horn bud and cervid antler tissue and expressed in the opposite direction or not significant in pig tissues; genes expressed in the same direction as within-species skin or bone controls excluded). b Proportions of homologously expressed genes shared between each cattle horn bud analysis (combined, 2-month-old, and 4-month-old) and each deer antler tissue. Figure panels display combined cattle horn buds (Comb.), 2-month-old cattle horn bud (2 mo), 4-month-old cattle horn bud (4 mo), bulk deer antler tip (Ant), bulk deer antler pedicle (Ped), isolated deer antler mineralized cartilage (MC), isolated deer antler cartilage (CA), isolated deer antler transition zone (TZ), isolated deer antler pre-cartilage (PC), isolated deer antler reserve mesenchyme (RM), and skin (Skin) and bone (Bone) unrelated to cranial appendages.