The human body contains 23 pairs of chromosomes, including one X chromosome in females and one X and one Y chromosome in males. Nondisjunction occurs when abnormal chromosome counts in gametes cause chromosome number disorders. The Human Genome Project aimed to sequence all human DNA to better understand genetics and enable advances like gene therapy, DNA fingerprinting, and treating genetic disorders.

1. Chapter 14 The Human Genome By Heidi Erdenetsogt

2. Human Heredity The human body is made up of chromosomes which all contain at least one X chromosome .

3. There are 23 X chromosomes and 23 Y chromosomes in males. In females, there are 46 X chromosomes. The Chromosomes

4. Male Chromosomes In males, since there is only 1 X chromosome the X-linked alleles are expressed in males although recessive .

5. Nondisjunction When gametes are caused to have an abnormal chromosomes count, causing a chromosomes number disorder .

6. Human Genome Project The Human Genome Project is the attempt to sequence all human DNA.

7. Gene Therapy Gene therapy is the process in which a missing or not working gene is replaced with a good gene.

8. DNA Fingerprinting DNA fingerprinting is a method which can be used to determine the identification of a specific individual.

9. Karyotype It is the picture formed after cutting and arranging chromosomes into a photograph which is then called a karyotype.

10. Pedigree A pedigree is a diagram that is used to show the relationships within a family.

11. Genetic Disorders A small change in DNA of one cell can effect protein structures thus causing a genetic disorder such as cystic fibrosis or sickle cell disease.

12. THE END! (;