A purebred plant that has yellow flowers is crossed with a purebred plant that has white flowers. All the offspring have yellow flowers. Which conclusion about yellow flowers is supported by these results?

The yellow color is dominant and the white is recessive.

Yellow coloured flowers is a dominant trait because it is expressed even with the presence of white coloured flower trait. there is a dominant allele in all the offsprings

phenotypic ratio = all bear yellow flowers

genotypic ratio = all are heterozygous dominant.