Genetics

1234567
Across
  1. 1. a trait that requires only one gene to be expressed.
  2. 5. a record of decent.
  3. 6. an observable characteristic.
  4. 7. a square on a pedigree represents a ________.
Down
  1. 2. the child of a parent.
  2. 3. a trait that requires another recessive gene to be expressed.
  3. 4. a circle on a pedigree represents a _________.