Genetics

2. The basic building block of DNA and RNA, consisting of a sugar, phosphate, and a base.
4. An image or diagram showing the arrangement of chromosomes in a cell.
5. A relationship between alleles where one masks the expression of another.
7. The plural form of "locus," referring to specific positions of genes on chromosomes.
9. The region of a chromosome where sister chromatids are joined and spindle fibers attach.
12. The process of cell division that results in two identical daughter cells.
14. A segment of DNA that codes for a specific trait.
15. The genetic makeup of an organism, represented by specific alleles.

1. A nitrogenous base in DNA and RNA that pairs with guanine.
3. The differences in traits among individuals of a species.
6. Thread-like structures made of DNA molecules that carry genetic information.
7. The specific location of a gene or DNA sequence on a chromosome.
8. A type of nitrogenous base in DNA and RNA, which includes adenine and guanine.
10. Chromosomes that have the same sequence of genes and structure, one from each parent.
11. The physical appearance or observable traits of an organism.
13. The cell formed by the union of a sperm and an egg; the first stage of a developing organism.