Help olds i this question

In some plants, pointed leaves (p) are dominant over rounded leaves (p). a plant with a genotype of pp

What molecules will be best used to compare different species with the exact same sequence of amino acids? why would two species have the same protein even if the molecules in question is different? (hint: transcription to translation to protein).

The pressurized plants and fungi mentioned in the video have some surprising similarities. what differences would you expect them to have?