Tables and diagrams

Inheritance and variation

Cactus and succulent atlas Index of former names Tables and diagrams Cultivation procedures Rootstocks

MODEL OF SEGREGATION AT A SINGLE LOCUS

Aa × Aa

Columns show the pollen donor’s gametes, rows the maternal plant’s gametes

Each cell in the table has a probability of 25 percent
Gamete	A	a
A	AA	Aa
a	Aa	aa

25%AA50%Aa25%aa

A teaching model developing the topic of Konrad Szychowski’s original Odrobina genetyki. It assumes diploidy, equal segregation, random fusion of gametes and equal survival. It does not assign alleles to a specific cactus character. [Clark et al. 2018]

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