It seems there might be a typo or encoding issue in your question. If you're asking how long it takes to grow a cabbage, it typically takes about 70 to 100 days from planting the seeds to harvest, depending on the variety and growing conditions. If you meant something else, please clarify!
The genotype of the offspring will be WwMm, representing a heterozygous combination for both genes (Ww for gene 1 and Mm for gene 2). This means the offspring will inherit one dominant allele (W or M) and one recessive allele (w or m) for each gene.