MCQs Zoology-26 Posted on 2025-11-142025-12-03Author admin 0 Table of Contents Toggle MCQs Zoology-26MCQs Zoology-26 MCQs Zoology-26 1. Genetic drift contributes to loss of heterozygosity at a rate inversely proportional to __________. Mutation rate Population size Gene flow Selection pressure 2. The animal most closely related to the horse in evolutionary terms is __________ Donkey Camel Deer Cow 3. The structural unit of compact bone in humans is ——- Trabecula Canaliculus Osteon Haversian canal 4. A population with low heterozygosity is likely to have __________ Greater adaptive potential Low mutation rates High gene flow Reduced fitness and resilience 5. The —————————- is the primary site of longitudinal bone growth Epiphyseal plate Metaphysis Epiphysis Diaphysis 6. ——— is the main inorganic component of bone matrix Magnesium phosphate Calcium carbonate Calcium phosphate Collagen 7. The discovery of mustard gas as a mutagen was significant because it demonstrated that __________ Radiation was the only mutagenic agent Chemicals could also induce heritable genetic changes Mutations were always lethal Mutations could not be induced artificially 8. A hybrid from a cross between two single crosses is known as __________ Multiple hybrid Double cross Dihybrid Three-way cross 9. Which of the following bones is formed primarily through intramembranous ossification? Frontal bone Humerus Femur Vertebra 10. In ruminants, the primary site of microbial fermentation of cellulose is the ———— Duodenum Omasum Abomasum Rumen Loading … MCQs Zoology-26
