Yes , i would help you but the photo isn't clear . :(
There are 4 outer atoms and lone pairs that are present in a molecule with a see-saw shape. It was called "seesaw" comes from the observation that it looks like a playground seesaw. It is very common that four bonds to a central atom result in tetrahedral or, less commonly, square planar geometry.
This can affect the organisms living there because now, their environment is probably different than what they have been living in for a long time, so now they have to adapt to this new environment, and if they don't, the organisms will probably end up dying.
Well since the capital letter is dominate and always takes power and the lower case letter is recessive doesn't take power. It would be 50%.
The answer would be Yy and yy :D