Genetics and natural selection

Edit Answers
123456789101112131415
Across
  1. 3. when an individual has two of the same type of alleles
  2. 6. when an individual has a dominant allele and a recessive allele
  3. 7. the number of genes we get from each parent
  4. 8. A type of allele that when present on its own will not affect the individual.
  5. 9. a variation of a gene
  6. 10. determines an individual's traits and are passed down from parents to offspring
  7. 11. characteristic or feature of an organism that enhances its survival or reproductive success in a particular environment
  8. 12. an individual's visible traits determined by their genotype
  9. 14. the type of allele that will always be expressed
  10. 15. where DNA is found in the cell
Down
  1. 1. what an organism's genes are for a trait
  2. 2. a change in an organism's DNA that can be helpful, harmful, or neutral
  3. 3. the passing down of traits from parents to offspring
  4. 4. DNA in the nucleus takes this form. Humans have 46 of them.
  5. 5. Organisms with traits better suited to their environment tend to survive and reproduce.
  6. 13. a tool that helps us determine the probability of which genes will be passed down from parents to offspring