Series:

Thumbnail	Title	Series Number	Date	Description
			1971
			2844
	Genetic code		1971	This unit is concerned with the cell nucleus. The different stages of mitosis are pointed out and...
			23 May 1971
	Cells and organisms		1971	Paramecia are described, and the structure of various single cell organisms are demonstrated. The...
	S100 Moth Research		1971	Peggy Varley talks about the survey of peppered moth populations for the S100 Science Foundation...
	The effect of selection on natural populations		1971	Dr Holmes explains how the frequency in a population of a mutant gene with selective advantage is...
	Artificial selection		1971	Dr Sidnie Manton talks about how a new breed (variety) of cat with long fur but the Siamese colour...