biology 9

3. means "one set"
7. in which both alleles contribute to the phenotype of the organism.
8. the chromosomes line up in a similar way to the metaphase stage of mitosis
9. all of the tall plants have the same ___________,or physical characteristics.
10. The likelihood that a particular event will occur is called _______
11. they may exchange proportions of their chromatids in a process called_____.
13. in prophase of meiosis 1, however, each chromosomes pairs with its corresponding homologous chromosomes to form a structure called _______
16. spindle fibers attach to the chromosomes
17. meiosis 1 results in two haploid daughter cells, each with half the number of chromosomes as the original cwll.
18. is used to locate and identify the gene or group of genes that determines a particular inherited trait.

1. a cell that contributes both sets of homologous chromosomes is said to be_______.
2. diffrent forms of a gene are called ____
4. the gene combinations that might result from a genetic cross can be determined a diagram known as___________
5. the fibers pull the homologous chromosomes toward opposite ends of calls
6. organisms that have two identical alleles for a paticular trait are said to be __________
12. cells undergo a round of dna replication, forming duplicate chromosomes
14. the sister chromatides separate and move toward the ends of the cell
15. Have the same________, or genetic makeup
19. one of ________ principles was to inherited of biological characteristics is determined by individual units known as genes.