Which term would be applied to a regulatory condition that occurs when protein is associated with a particular section of DNA and greatly reduces transcription?

It's either -limiting factors or -scarce resources but i'd go with my first answer since the food and water are abundant they really aren't scarce

Iwould assume they all have the sun in the center.

Hybridization occurs frequently in naturethe act or process of mating organisms of different varieties or species to create a hybrid. (molecular biology) the process of forming a double stranded nucleic acid from joining two complementary strands of dna