AP BIOLOGY

Detailed explanation-1: -Hybridization is the process of crossing two parent varieties or breeds that are genetically different. It is highly frequent in plants and domestic animals to improve their quality and yield.

Detailed explanation-2: -Hybridization is the mating of genetically differentiated individuals or groups and may involve crossing individuals within a species (also known as line crossing or strain crossing) or crossing individuals between separate species.

Detailed explanation-3: -The cloning procedure doesn’t involve the breeding of two genetically different individuals. Therefore, the given statement is false.

Detailed explanation-4: -In animal breeding, crossbreeds are crosses within a single species, while hybrids are crosses between different species.

Detailed explanation-5: -Heterosis refers to the superior phenotypes observed in hybrids relative to their inbred parents with respect to traits such as growth rate, reproductive success, and yield. Heterosis was discovered in maize about a century ago and has subsequently been found to occur in many crop species.