Probability of getting both male and female trees when planting unsexed seedlings
The following assumes a 50% chance that any given seedling will be male or female in plant species with separate male and female plants.
Note: There may be genetic issues within a specific species which result in a higher percentage of seed maturation from one gender or the other, but as a general rule it's safe to assume that a randomly selected species will be equivalent to a coin flip in terms of whether the resulting seedlings will be male or female.
If you plant one single tree you have:
a 50% chance of it being male
a 50% chance of it being female
If you plant two trees you have:
a 25% chance both will be male
a 25% chance both will be female
a 50% chance you will get one of each gender
If you plant three trees you have:
a 12.5% chance all will be male
a 12.5% chance all will be female
a 75% chance you will get a mix of both genders
If you plant four trees you have:
a 6.25% chance all will be male
a 6.25% chance all will be female
a 87.5% chance you will get a mix of both genders
If you plant five trees you have:
a 3.125% chance all will be male
a 3.125% chance all will be female
a 93.75% chance you will get a mix of both genders
If you plant six trees you have:
a 1.5625% chance all will be male
a 1.5625% chance all will be female
a 96.875 chance you will get a mix of both genders
If you plant seven trees you have:
a 0.78125% chance all will be male
a 0.78125% chance all will be female
a 98.4375% chance you will get a mix of both genders
If you plant eight trees you have:
a 0.390625% chance all will be male
a 0.390625% chance all will be female
a 99.21875% chance you will get a mix of both genders
If you plant nine trees you have:
a 0.1953125% chance all will be male
a 0.1953125% chance all will be female
a 99.609375% chance you will get a mix of both genders
If you plant ten trees you have:
a 0.09765625% chance all will be male
a 0.09765625% chance all will be female
a 99.8046875% chance you will get a mix of both genders
Note: There may be genetic issues within a specific species which result in a higher percentage of seed maturation from one gender or the other, but as a general rule it's safe to assume that a randomly selected species will be equivalent to a coin flip in terms of whether the resulting seedlings will be male or female.
If you plant one single tree you have:
a 50% chance of it being male
a 50% chance of it being female
If you plant two trees you have:
a 25% chance both will be male
a 25% chance both will be female
a 50% chance you will get one of each gender
If you plant three trees you have:
a 12.5% chance all will be male
a 12.5% chance all will be female
a 75% chance you will get a mix of both genders
If you plant four trees you have:
a 6.25% chance all will be male
a 6.25% chance all will be female
a 87.5% chance you will get a mix of both genders
If you plant five trees you have:
a 3.125% chance all will be male
a 3.125% chance all will be female
a 93.75% chance you will get a mix of both genders
If you plant six trees you have:
a 1.5625% chance all will be male
a 1.5625% chance all will be female
a 96.875 chance you will get a mix of both genders
If you plant seven trees you have:
a 0.78125% chance all will be male
a 0.78125% chance all will be female
a 98.4375% chance you will get a mix of both genders
If you plant eight trees you have:
a 0.390625% chance all will be male
a 0.390625% chance all will be female
a 99.21875% chance you will get a mix of both genders
If you plant nine trees you have:
a 0.1953125% chance all will be male
a 0.1953125% chance all will be female
a 99.609375% chance you will get a mix of both genders
If you plant ten trees you have:
a 0.09765625% chance all will be male
a 0.09765625% chance all will be female
a 99.8046875% chance you will get a mix of both genders
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