"Genetics and Heredity": HTML5 Crossword

Across

5. total number of chromosomes humans have (5,3)
6. when there are 2 alleles that are the same, either both dominant or both recessive (10)
7. represented by lowercase letters and are ONLY seen when NO dominant alleles are present (9,7)
10. when there are 2 alleles that are different, so 1 dominant and 1 recessive (12)
12. the passing of traits from one generation to another (8)
16. physical trait that is expressed and can be seen (9)
18. What type of allele is "e" for attached earlobes? (9)
19. What type of allele is "E" for unattached earlobes? (8)

Down

1. contains DNA and are passed through generations through sexual reproduction (11)
2. represented by uppercase letters and are seen anytime they are present (8,7)
3. DNA code for a trait that is represented by letters (8)
4. contains 1/2 of the genetic material needed to make a whole new organism (3,4)
8. number of chromosomes you get from each parent (6,5)
9. a specific form of a gene that controls which trait is expressed (6)
11. section of DNA that makes a specific trait (4)
13. the study of heredity (8)
14. another word for heterozygous (6)
15. another word for homozygous (8)
17. physical characteristics of an organism (6)