AP BIOLOGY

Detailed explanation-1: -Hybrid vigor, or heterosis, is the increase in stature, biomass, and fertility that characterizes the progeny of crosses between diverse parents such that the F1 is superior to the better of the two parents. In plants, this is basically achieved by a greater proliferation of cells in some but not all tissues (2).

Detailed explanation-2: -Hybrid vigor, also known as heterosis or outbreeding enhancement, is the phenomenon that a hybrid offspring has improved traits, such as growth rate, biomass, stress tolerance, and fertility [179, 180]. For example, hybrids of maize or domestic dog grow stronger and bigger than their parents [181].

Detailed explanation-3: -heterosis, also called hybrid vigour, the increase in such characteristics as size, growth rate, fertility, and yield of a hybrid organism over those of its parents.

Detailed explanation-4: -Heterosis is also called as hybrid vigour. The increase in characteristics of size, growth rate, fertility and yield of a hybrid organism over those of its parents results from heterosis.

Detailed explanation-5: -Heterosis is the superiority of a hybrid over its parents. Increase in Size and General Vigour: The hybrids are generally more vigorous, i.e., healthier and faster growing and larger in size than their parents. . Better Quality: In many cases, hybrids show improved quality.