Self pollination
- self pollination leads to self fertilization where gametes come from the same plant and is the most extreme form of inbreeding
- there will be some variation since in meiosis there is random combination of genes and it is not the same meiosis that produces the pollen grain nuclei and female gamete nucleus
- if plant has potentially harmful recessive allele there is a high probability that the offspring will be homozygous recessive
- likely that all seeds in the fruit will show very little variation as all the male gametes originated from the same parent
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Cross pollination
- pollen grains that brought male nuclei could have come from several or many plants so within each fruit there could be a wide range of genotypes
- Potential for variation with the seed in one fruit is large if mant genes are considered. This is outbreeding which increases the amount of variation in the offspring generation.
