Question

Why might the number of introns in a gene be different between plant species?

What features indicate which species are older plants?

What features indicate which species are younger (plants)?

Answer 1

1. Introns are important because the protein variety is greatly enhanced by alternative splicing in which introns take partly important roles. It producing multiple variant proteins from a single gene in a eukaryotic cell. Transcription initiation and termination processes are cellular processes that involve introns, as well, which need some sequence elements in introns to be correctly completed.

2. The older plants looks thick bark, lot of branch, flowers, fruits etc.

3. The younger plants are smooth stem, little stem, root has small rootlets etc.