genetics

5. having more than one origin or source
10. A genotypic ratio is a numerical comparison of the allele combinations
13. the set of observable characteristics of an individual resulting from the interaction of its genotype with the environment
16. Same alleles
17. ratio depicting the different genotypes of the offspring from a test cross
18. In the nucleus of each cell, the DNA molecule is packaged into thread-like structures
22. forms of a gene that arise by mutation and are found at the same place on a chromosome
23. the number and visual appearance of the chromosomes in an organism
25. the 23rd chromosome
27. a trait that is expressed whenever an allele for it is present

1. one of the numbered chromosomes, numbered roughly in relation to their sizes
2. a chance of something
3. having two identical alleles of a particular gene
4. If the alleles of a gene are different, one allele will be expressed
6. through his work on pea plants, discovered the fundamental laws of inheritance
7. a form of Gene interaction in which both alleles of a gene at a locus are partially expressed
8. refers to the genetic background
9. relating to the origin of diverse individuals or kinds by descent from a single ancestral individual or kind
11. a grid that tells the probability and trait
12. the genetic constitution of an individual organism
14. inheritance with two alleles of the same gene are expressed separately to different traits
15. the offspring of two plants or animals of different species or varieties, such as a mule (a hybrid of a donkey and a horse)
19. disease when you get high levels of saturated, very long chain fatty acids build in the nervous system and adrenal cortex
20. determines if you’re a boy or girl
21. Refers to a trait that is expressed only when genotype is homozygous
24. having two different alleles of a particular gene
26. a mixture of proteins and phospholipids forming a whitish insulating sheath around many nerve fibers, increasing the speed at which impulses are conducted