A single gene defect usually does not cause the chromosome structure or number to be abnormal. Similarly, a person can have normal genes, but, because they have extra copies of genes due to a chromosome abnormality, the extra copies can cause the genes to not work properly.This is an important distinction to make. Consult your physician or genetic counselor for more information.imilarly, a person can have normal genes, but, because they have extra copies of genes due to a chromosome abnormality, the extra copies can cause the genes to not work properly. This is an important distinction to make. Consult your physician or genetic counselor for more information.
Eliza Smith. Eliza Smith (d. 1732?) was one of the most popular female 18th-century cookbook writers. Unlike other popular woman cookbook authors whose books overlapped with hers, such as Hannah Glasse, nothing seems to be known about her personal life beyond the fact that she was one of the first popular female cookbook authors.
John Smith (explorer) Captain John Smith after an early portrait. John Smith (c. January 1580 â 21 June 1631) was a English soldier, explorer, and author. Smith was a leader of the first settlements at the Virginia Colony in 1608-1609. He explored the rivers of Virginia and the Chesapeake Bay and drew a map of the Chesapeake Bay area and New England.