The income per capita in Phoenix is 16% lower than the national average. The median household income in Phoenix is 12% lower than the national average. Male median earnings are 41% higher than female median earnings. The unemployment rate in Phoenix is 11% higher than the national average. The poverty level in Phoenix is 49% higher than the national average.
One major internal environmental influence that affects gene expression is gender, as is the case with sex-influenced and sex-limited traits. Similarly, drugs, chemicals, temperature, and light are among the external environmental factors that can determine which genes are turned on and off, thereby influencing the way an organism develops and functions.
No, the environment has an influence on the growth of an organism. It's only important if he were growing pea plants. No, if Mendel chose a different organism to work on, he would still need to maintain a controlled environment. Mendel looked at differences in pea plants in order to study trait inheritance. He had to make sure that any differences he saw were the result of the internal makeup of the plant and not changes in the environmental conditions. This would be true no matter what organism Mendel chose to use.