"Genetics and Heredity": HTML5 Crossword

Across

4. section of DNA that makes a specific trait (4)
7. the study of heredity (8)
8. a specific form of a gene that controls which trait is expressed (6)
9. DNA code for a trait that is represented by letters (8)
11. represented by uppercase letters and are seen anytime they are present (8,7)
13. number of chromosomes you get from each parent (6,5)
14. total number of chromosomes humans have (5,3)
15. What type of allele is "e" for attached earlobes? (9)
18. contains DNA and are passed through generations through sexual reproduction (11)

Down

1. another word for homozygous (8)
2. contains 1/2 of the genetic material needed to make a whole new organism (3,4)
3. represented by lowercase letters and are ONLY seen when NO dominant alleles are present (9,7)
5. physical characteristics of an organism (6)
6. physical trait that is expressed and can be seen (9)
10. when there are 2 alleles that are different, so 1 dominant and 1 recessive (12)
12. What type of allele is "E" for unattached earlobes? (8)
16. when there are 2 alleles that are the same, either both dominant or both recessive (10)
17. the passing of traits from one generation to another (8)
19. another word for heterozygous (6)