Quaer staggered arrangement is seen in: (A) Immunoglobulin, (B) Hemoglobin, (C) Keratin, (D) Collagen
Answer is D. The collagen fibres have a triple stranded,quaer staggered arrangement. This arrangement helps in mineralization Tropocollagen molecules are arranged in a "quater-staggered array" to form collagen fibres . Reference: Harpers illustrated biochemistry 31st edition pg 593