Mutations of TYR and MITF genes are associated with plumage colour ... by Wang, Ye; Li, Si-Ming; Huang, Jing; Chen, Shi-Yi; Liu, Yi-Ping / Asian-Australasian Journal of Animal Sciences.
Flexibility is not important when performing daily tasks. Please select the best answer from the choices provided.
The only activities I know of to increase flexibility are stretching. Don't look at it as a chore, look at it as a way for you to relax. I personally find that I'm more likely to enjoy stretching if the environment is right.