A characteristic could be that they have ONE Cotyledon or have floral parts in multiples of three.
Your answer is meiosis I'm pretty sure :)
The most important physical fitness for your and middle aged
adults is cardiorespiratory endurance as this measures the capability and
health of the heart, muscles and lungs in making sure that they are strong
enough and making the body work enough and to be fit, this is a component in
enhancing a maintaining a good health to an individual.
You are supposed to answer what happens in each phase of meiosis.
Your answer would be $4 times $y.
Hope this helps; have a great day!