Cumulative fraction of CEMP-no stars ([C/Fe] ≥ +0.7) observed in dSph galaxies (orange solid line) with the associated 1σ 84.13% confidence level (Gehrels 1986) (orange shaded area). Fraction in the MW halo (blue solid line) is from Placco et al. (2014), while the fraction computed by Ji et al. (2019) in UFDs is represented by the green solid line with its associated uncertainty (green shaded area). The carbon abundances in dSph galaxies are corrected for internal mixing (Placco et al. 2014) and are compiled from these works: Lucchesi et al. (2020), Jablonka et al. (2015), Tafelmeyer et al. (2010), Skúladóttir et al. (2015, 2024), Kirby et al. (2015), Venn et al. (2012), Starkenburg et al. (2013), Susmitha et al. (2017), Hansen et al. (2018), Yoon et al. (2020), Kirby & Cohen (2012).