Genetics and Heredity

4. is a eukaryotic cell formed by a fertilization event between two gametes
6. any change in the DNA that disrupts the normal cell cycle.
8. located in the nuclues of the cell contains the DNA
11. when both alleles are expressed equally- so organisms are multi-colored
12. Father of genetics, discovered genetics by studying pea plants
15. a trait that will always be expressed in the physical appearance of the organism, respresented by a capital letter
17. characteristics that are passed from parent to offspring some traits are dominant and some recessive
20. when the dominant allele is partially dominant- so colors blend

1. a tool used to predict the outcome of possible gene combinations that an offspring will have
2. an organisms physical appearance or visible traits
3. caused by a mutation or change in DNA like downs syndrome, cystic fibrosis, sickle cell
5. The part of the cell cycle during which the nucleus divides
7. a diagram of family relationships that can be used to trace traits that have been passed down or even genetic diseases
9. a trait that does not show up unless the organism receives 2 recessive alleles, one from each parent, represented by lower case letters
10. the factors that control traits, located on a chromosome, come in pairs
13. located on the chromosomes in the nucleus of the cell, contains the genes
14. process of reduction division in which the number of chromosomes per cell is cut in half
16. the passing of traits from parents to offspring
18. different forms of a gene, or one gene from the pair
19. an organisms genetic makeup or allele combination