Genetics

8. Refers to the difference in characteristics between individual of the same species
10. variation - complete range of characteristics from one extreme to another
14. diagram used to work out how gametes can combine in a genetic cross
15. allele that is masked by the presence of a dominant allele and can only appear phenotypically if homozygous
16. process of choosing individual with desirable characteristics in order breed offspring that may inherit their desire characteristics
18. one or more nucleotide based are removed from the gene sequence
19. section of DNA that contains the information for a particular genetic characteristics

1. number of chromosomes in the cell (46n)
2. Physical appearance of an organism
3. are thread-like structure that are made up of a long molecule of DNA
4. Occurs when the contribution of both alleles are visible in phenotype
5. Inheritance that produce a heterozygote with a phenotype that is intermediate or in between the phenotypes of the homozygote parent
6. position of a gene on a chromosome
7. different form of the same gene
9. reappearance of an ancestral characteristics after it has apparently not come to light for few generation
11. a genetic cross between parents that have different alleles for one particular gene
12. Genetic make –up of an organism
13. individual has different alleles for a particular gene
17. transfer of characteristics(such as height, colour)from parent to their offspring