Natural Selection Part 1

4. an instruction for making a protein molecule
9. a young insect that looks somewhat different from the adult
13. an event or process that leads to a result or change
14. having died out completely and no longer alive anywhere on Earth
16. evidence of life from the past, such as fossilized bones, footprints, or leaf prints
17. change: changes in climate over a long period of time that can be caused by natural events or human activities
18. a long piece of DNA that contains many genes
19. a random change to a gene that sometimes results in a new trait
21. trait: a trait that makes it less likely that an individual will survive in a specific environment
23. a characteristic that all members of a species have

1. version: a specific form of a gene that provides instructions for making a particular protein molecule
2. to receive genes from a parent
3. a graph that uses bars to show how characteristics or values are distributed within a group
5. everything (living and nonliving) that surrounds an organism
6. a result or change that happens because of an event or process
7. trait: a trait that makes it more likely that an individual will survive in a specific environment
8. a related organism from a previous generation
10. activities: things people do that affect the Earth system
11. a group of individuals born and living at about the same time
12. the number of individuals with each trait in a population
15. a way of hiding by looking the same as the background
20. extinction: when a huge number of species on Earth die out completely around the same time
21. selection: the process by which the distribution of traits in a population changes over many generations
22. a type of molecule that genes and chromosomes are made of