Are there are at least 3 exons in this gene? is there an opition for a gen with less than 3 exons?
This question as written is difficult to interpret. In order to be able to provide an answer I'll make a few assumptions.
Assumption 1: you are talking about h. sapiens.
Assumption 2: by "amount" you mean the number of exons in a "gene"... (see 3)
Assumption 3: you are discussing a species that leverages alternative splicing, so when you say "gene" you mean, "across all transcript isoforms of a gene".
Assumption 4: etc .....
You can find several good answers to this question by reading past posts already asked on this forum. For example, consider: How to get number of exons for each transcript in biomart.
If after reading through this questions still remain, feel free to follow up.
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