Froggy Jumps Natural selection (Upper Sixth Science Biology)Version en ligne Test your knowledge on variation, mutation, and their roles in natural selection! par YAKILI LMS 1 What is variation in the context of natural selection? a Differences in traits among individuals in a population. b The process of evolution over time. c The extinction of species. 2 How does mutation contribute to variation? a It introduces new genetic variations in a population. b It has no effect on variation. c It eliminates existing traits. 3 Why is variation important for natural selection? a It slows down evolution. b It provides the raw material for evolution and adaptation. c It makes species more uniform. 4 What type of mutation can affect an organism's fitness? a Beneficial mutations that enhance survival. b Neutral mutations with no effect. c Harmful mutations that reduce fitness. 5 What is a common source of genetic variation? a Asexual reproduction only. b Environmental changes. c Sexual reproduction and recombination. 6 Which of the following is NOT a mechanism of natural selection? a Survival of the fittest. b Differential reproduction. c Random mating. 7 What role does the environment play in natural selection? a It has no influence on traits. b It determines which traits are advantageous. c It only affects mutation rates. 8 What is the result of natural selection acting on variation? a Decreased genetic diversity. b Immediate extinction of species. c Increased adaptation of a population to its environment. 9 What is genetic drift? a A type of mutation. b Random changes in allele frequencies in a population. c A form of natural selection. 10 How can human activities impact variation? a By eliminating all mutations. b By altering habitats and affecting selective pressures. c By promoting genetic uniformity. 11 What is the primary purpose of meiosis? a To create identical daughter cells. b To produce gametes for sexual reproduction. c To replicate DNA for cell division. 12 During which phase does crossing over occur? a Metaphase II. b Anaphase I. c Prophase I. 13 What is independent assortment? a Random distribution of maternal and paternal chromosomes. b The pairing of homologous chromosomes. c The replication of DNA. 14 How many daughter cells are produced at the end of meiosis? a Four. b Two. c Eight. 15 Which process increases genetic variation during meiosis? a DNA replication. b Crossing over. c Cell division. 16 What type of cells are produced by meiosis? a Haploid gametes. b Identical clones. c Diploid somatic cells. 17 What is the result of crossing over? a No genetic change. b New combinations of alleles. c Identical chromosomes. 18 In which phase do homologous chromosomes separate? a Prophase II. b Telophase II. c Anaphase I. 19 What is the significance of meiosis in evolution? a It decreases mutation rates. b It increases genetic diversity. c It produces identical offspring. 20 What happens during metaphase I? a Homologous chromosomes align at the equatorial plate. b Sister chromatids separate. c DNA is replicated. 21 What is morphological speciation primarily based on? a Behavioral patterns of species. b Genetic sequences of organisms. c Physical traits and structures of organisms. 22 Biological speciation focuses on what aspect of species? a Geographic distribution of species. b Reproductive isolation between populations. c Morphological differences. 23 Which concept is central to genetic speciation? a Genetic divergence due to mutations. b Behavioral changes. c Morphological adaptations. 24 Phylogenetic speciation is determined by what? a Evolutionary relationships and lineage. b Habitat preferences. c Physical characteristics. 25 What is a key factor in biological speciation? a The age of the species. b The size of the population. c The ability of populations to interbreed. 26 Which type of speciation involves geographic barriers? a Allopatric speciation. b Parapatric speciation. c Sympatric speciation. 27 What role do mutations play in genetic speciation? a They introduce new genetic variations. b They eliminate existing traits. c They have no effect on speciation. 28 Which method is commonly used in phylogenetic studies? a Molecular sequencing. b Behavioral observation. c Morphological comparison. 29 What is the outcome of reproductive isolation? a Decreased population size. b Formation of new species. c Increased genetic diversity. 30 Which type of speciation occurs without geographic separation? a Peripatric speciation. b Sympatric speciation. c Allopatric speciation. 31 What is the main concept of Darwin's theory of evolution? a Artificial selection b Genetic drift c Natural selection 32 Which book did Darwin publish outlining his theory? a On the Origin of Species b The Descent of Man c The Voyage of the Beagle 33 What does 'survival of the fittest' refer to? a Natural selection process b Intelligence c Physical strength 34 What role do variations play in evolution? a They are irrelevant. b They provide raw material for natural selection. c They hinder adaptation. 35 Which of the following is a key mechanism of evolution? a Mutation b Respiration c Photosynthesis 36 What is the significance of the Galápagos Islands in Darwin's research? a They had no impact. b They inspired his ideas on adaptation. c They were his birthplace. 37 What is a common misconception about evolution? a It is a linear process. b It is based on random chance. c It only applies to animals. 38 Which of these concepts is NOT part of Darwin's theory? a Inheritance of acquired traits b Common descent c Natural selection 39 What did Darwin observe about finches on the Galápagos Islands? a They had different beak shapes adapted to their diets. b They were all identical. c They could not fly. 40 How did Darwin's theory challenge existing beliefs? a It supported creationism. b It proposed a natural mechanism for species change. c It denied the existence of species. 41 What is Neo Darwinism primarily focused on? a The study of fossils. b The synthesis of Darwinian evolution and genetics. c The behavior of animals. 42 Which concept is central to Neo Darwinism? a Lamarckism. b Artificial selection. c Natural selection. 43 Who is considered a key figure in the development of Neo Darwinism? a Gregor Mendel. b Theodosius Dobzhansky. c Charles Lyell. 44 What role do mutations play in Neo Darwinism? a They have no effect. b They are always harmful. c They introduce genetic variation. 45 Which of the following is a key mechanism of evolution in Neo Darwinism? a Punctuated equilibrium. b Sympatric speciation. c Genetic drift. 46 What does the term 'fitness' refer to in Neo Darwinism? a Speed of movement. b An organism's ability to survive and reproduce. c Physical strength. 47 Which of these is NOT a component of Neo Darwinism? a Natural selection. b Mutation. c Inheritance of acquired characteristics. 48 What is the modern synthesis in Neo Darwinism? a A theory about species extinction. b A method of fossil dating. c The integration of genetics with Darwinian evolution. 49 Which of the following is a consequence of Neo Darwinism? a Species evolve over time through natural selection. b All mutations are beneficial. c Species remain unchanged. 50 What does Neo Darwinism say about the role of the environment? a It has no impact on evolution. b It only affects physical traits. c It influences which traits are favorable.
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