Table 1.

Sizes of Chromosomes, an Estimate of the Number of Each Chromosome Needed to Yield 10 ng of DNA and an Approximate Amount of DNA (ng) from 250,000 Copies of Flow‐Sorted Chromosomes

Chromosome	Size (Mb)	Number of chromosomes to yield 10 ng DNA	DNA per 250,000 chromosomes (ng)
1	247	19,501	128.2
2	243	19,904	125.6
3	200	23,901	104.6
4	191	25,202	99.2
5	181	26,205	95.4
6	171	27,996	89.3
7	159	30,193	82.8
8	146	33,113	75.5
9	140	35,014	71.4
10	135	35,511	70.4
11	134	35,613	70.2
12	132	36,075	69.3
13	114	44,326	56.4
14	106	46,816	53.4
15	100	48,170	51.9
16	89	51,760	48.3
17	79	56,689	44.1
18	76	59,524	42.0
19	64	72,464	34.5
20	62	76,453	32.7
21	47	100,806	24.8
22	50	92,593	27.0
X	155	31,606	79.1
Y	58	85,911	29.1

Chromosome sizes according to Ensembl.

Number of chromosomes for 10 ng of DNA from CYDAC measurements (Mayall et al., 1984).