Genetics and Hereditary

6. The chromosomes that make up a pair, the one chromosome from each parent are called ____.
9. An organsim with two different alleles for a particular trait is ____.
10. The new combination of genes produced by corssing over and independent assortment is called ________.
11. The organism's allele pairs are called its ____.
12. A cell with "n" number of chromosomes is called a ___ cell.
13. The study of ____, which is the science of hereditary, began with Mendal who is regarded as the father of genetics.
15. ______ is the occurance of one or more extra sets of all chromosomes in an organism.
18. Gametes are formed during a process called ____, which is a type of cell division that reduces the number of chromosomes.
19. ____ is a process during which chromosomal segments are exchanged between a pair of homologous chromosomes.

1. From these results, he developed the ____________.
2. A cell that contains 2n number of chromosomes is called a ____ cell.
3. The observable characteristic or outward expression of an allele pair is called the ______.
4. Mendel's _______ states that the two alleles for each trait separate during meiosis.
5. These heterozygous organisms are called _____.
7. The process by which one haploid gamete combines with another haploid gamete is called ____.
8. An organism with two of the same alleles for a particular trait is ____.
11. The DNA on chromosomes are arranged in these segments called ___.
14. An individual who is heterozygous for a recessive disorder is called a _____.
16. In the case of humans, a scientist studies a family history using a ____.
17. In order to maintinf the same chromosomes number from generation to generation, an organism produces ___.