Oooc oc

Judson, H. P. The Eighth Day of Creation: The Makers of the Revolution in Biology. New York: Simon & Schuster, 1979.

Morgan, Thomas Hunt, et al. The Mechanism of Mendelian Heredity. New York: Holt Reinhart & Winston, 1915. Reprinted by Johnson Reprint Corporation with an Introduction by Garland E. Allen, 1978.

Sturtevant, Alfred Henry. A History of Genetics. New York: Harper & Row, 1965.

Chromosome, Eukaryotic

Living organisms are divided into two broad categories based upon certain attributes of cell structure. The first category, the prokaryotes, includes bacteria and blue-green algae. Eukaryotes include most other living organisms. One of the most important features distinguishing eukaryotes from prokaryotes is the chromosomal arrangement of genetic information in the cells. Eukaryotes enclose their genetic material in a specialized compartment called the nucleus. Prokaryotes lack nuclei.

haploid possessing only one copy of each chromosome

p

2

3

Hi

2

21

1

1

12 1

m

q

1

1

K-XOÎ

2

3

2

1

2

3

4

5

6

7

8

H

q22 q23 q24 q25 q26 q27 q28

band p22.3 p22.2 p22.1

p11.4 p11.3 p11.2

centromere q12 q13

q22 q23 q24 q25 q26 q27 q28

Chromosome staining reveals distinct bands that can be numbered for reference. Adapted from Lewin, 1997.

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