You can study 4 different type of genes.
First choose study type and click study.
Normal - you have 5 free attempts and can buy extra attempts with gold. You can get green genes and have chance get stronger.
Advanced - cost 20 diamonds. Get blue genes and have chance for stronger.
Technical - cost 100 diamonds. Get purple gene and have chance for stronger.
After choosing the study option you wanted (check item A and red arrows above) you need to click the STUDY bu
After pressing STUDY one of the 4 genes will lighten up (check item A in red rectangle above). The type of the gene will depend on luck. Now you need to develop that gene, it will appear in the left side with 00%(check below the item B and yellow rectangle).
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Choose how you want to DEVELOP the gene, using GOLD or DIAMONDS (check item D in green rectangle above). Then click the DEVELOP bu
When you develop the gene a quantity will appear(check item A in red rectangle below) and you can CLAIM (check item B in green rectangle below) it anytime (even if you don't reach the 100%). To make points in rank you need to study a gene 100%.
There is a daily Rank, everyone who completes a study 100% will get some rank points. The higher the points the better the reward you will receive. The rank is calculated at server reset (00:00) and you will get the Rank reward through your MAIL.