1. A change in the chemistry of a gene that is perpetuated in subsequent divisions of the cell in which it occurs; a change in the sequence of base pairs in the chromosomal molecule. 2. De Vries, term for the sudden production of a species, as distinguished from variation. [L. muto, pp.
Sugar or snow peas are grown for their flat, green pods. Peas are a cool-season crop that must mature before the weather gets warm. The ideal growing temperature for peas is 55Â°F to 70Â°F. Sow peas in the garden 6 weeks before the average last frost date in spring or as soon as the soil can be worked.How to plant and spacing.lanting time. Peas are a cool-season crop that must mature before the weather gets warm. The ideal growing temperature for peas is 55Â°F to 70Â°F. Sow peas in the garden 6 weeks before the average last frost date in spring or as soon as the soil can be worked.
1 Peas prefer soil that is fertile, well drained and high in organic matter. 2  Peas usually take 50-to-70 days from germination to harvest. 3  Plant 2-to-3 oz. ( 4 56-to-85 g) of seed for each 100 feet (30 m) of row.