Science
Heredity and Evolution
Practice questions
What is shown by analogous organs having similar function but different structure?What is the correct reason for considering the human arm and bat wing homologous?Why are bird wings and insect wings considered analogous rather than homologous?Why can deciding evolutionary relationships only by external similarity be wrong?Why is it more scientific to view evolution as a branching tree instead of a ladder?What is the correct scientific meaning of similarity between humans and chimpanzees?If an organism looks simple today, is it correct to call it backward in evolution?In an evolutionary tree, what can it generally mean if two branches are closer?After a sudden disaster, some organisms survive and their traits become more common in the population. What can this be related to?A new population forms when a few organisms reach a small island, and its traits become different. Which process can this illustrate?Why does natural selection not instantly create a new trait according to an organism's need?Which statement gives the correct scientific difference between acquired and inherited traits?Why is very low variation in a species risky in a changing environment?Which example shows the combined effect of heritable variation and natural selection?If organs of two species are similar, why does this not always prove a close relationship?On what basis do scientists study evolutionary relationships more reliably?In which situation can organisms from a common ancestor develop large differences?If a population has no variation, why will natural selection become limited?Which option gives the deepest correct conclusion of the whole chapter?In pea plants, tall stem is dominant over dwarf stem. If two hybrid tall plants are crossed, what is the expected proportion of dwarf offspring?