Crossword

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Across
  1. 2. The material where genes are encoded.
  2. 4. ___ trait: Characteristics that are passed down from biological parents to their offspring through genes. These characteristics are encoded in DNA.
  3. 8. ___ caused traits: Characteristics in an organism that are influenced by external factors such as temperature, nutrition, sunlight, disease, social interactions, or many other things. These are also known as acquired traits.
  4. 9. ___ Pressure: An external factor in an environment that can cause an organism to survive and reproduce at different rates, thus influencing its evolutionary path.
  5. 10. ___ selection: A process of evolution that causes a population to change over time, occurring when an environment favors certain traits over others, allowing surviving individuals to pass the favorable trait to their offspring.
  6. 11. ___ reproduction: Reproduction involving two parents.
  7. 15. A substance introduced into the environment that has harmful effects.
  8. 18. A trait that helps an organism survive and reproduce in a particular environment.
  9. 19. The descendants produced by biological parents.
  10. 20. ___ Competition: Different species compete for the same resources
  11. 21. The basic physical and functional unit of heredity, made of DNA, that carries the instructions for specific traits or functions
Down
  1. 1. ___ Competition: Individuals of the same species compete for the same resources.
  2. 3. The surroundings or external factors in which an organism lives, determining some traits and serving as the setting for survival and reproduction
  3. 5. ___ Advantage: A heritable trait or condition that increases an organism's ability to live and reproduce in its environment.
  4. 6. Reproductive cells used in sexual reproduction, such as sperm and eggs in animals, or ovules and pollen in plants.
  5. 7. Differences among individuals of the same species. This variation may or may not affect survival.
  6. 12. ___ reproduction: Reproduction that occurs with only one parent.
  7. 13. An interaction between organisms or species that vie for limited resources such as food, water, mates, or shelter.
  8. 14. A change in the genetic material of a cell.
  9. 16. An individual plant, animal, or living thing
  10. 17. A specific characteristic in an organism that can be physical, behavioral, or psychological. This characteristic can be determined by genes or environment, or is generally understood as a characteristic of an individual (e.g., eye color and height).