Fibril and hence the whole muscle. Elastin is a fibrous protein common in various soft tissues, like skin, blood vessels and lung tissue. Each monomer connects with each other, forming a 3D network, with ability to endure over 200% strain before deformation. Keratin is a structural protein mainly found in hair, nails, hooves, horns, quills. Basically keratin is formed by polypeptide chains, which coil into α-helices with sulfur cross-links or bond into β-sheets linked by hydrogen bonding. β-keratin, which is tougher than α-conformation, is more common in birds and reptiles. Resilin is an elastomeric insect protein, consisting of both α-helices and
The Origin of Species (The Outer Limits) next sentient species to arise could suffer the same fate, they built the ship to save a sample of that race before it wiped itself out, and protect it until it could repopulate the Earth. The ship extracted genetic material from the group students (and Hope) during the journey and created babies (modifying their genetics to avoid the dangers of inbreeding), creating a sufficient number of humans with enough genetic variation to repopulate the Earth. The Origin of Species (The Outer Limits) "The Origin of Species" is an episode of "The Outer Limits" television show. It was first broadcast on