'These were first seen in human cells in 1882; the exact number, 46, was determined in 1956'
chromosomes
SCIENCE: These were first seen in human cells in 1882; the exact number, 46, was determined in 1956
These were first seen in human cells in 1882; the exact number, 46, was determined in 1956
These were first seen in human cells in 1882; the exact number, 46, was determined in 1956
SCIENCE
chromosomes
SCIENCE