What supports the claim that the environment can affect genetic traits?

Answer 1

the underlying basis for how the environment affects genetics is to do with mutation in DNA. Many chemical compounds in the environment and even UV light from the sun cause changes in the genetic code of an individual. If you consider DNA to be the instructions on how make a person it is easy to see that by changing these instructions the end results will be different. In most cases these changes go unnoticed but if enough accumulate in the right genes you are likely to develop cancer and are at a high risk of dying and therefore not passing on your DNA to your children. However if mutations occur in the gametes (sperm and egg cells) then changes to DNA may be passed on to your children and it is in the way that the environment affects genetics.

Answer 2

Yes, over time, in response to environmental factors, as well as other genetic variants, the genetic makeup of an ethnic group changes.

Dark skin as a result of exposure to sunlight for example.

Answer 3

The environment (in general and in specific) {everything from how cold it is today to getting hit by a truck} determines which genes die.

Making new genes is purely random, but weeding them out is mostly under environmental control.

Answer 4

The field of epigenetics provides evidence that environmental factors can influence gene expression without altering the underlying DNA sequence. Studies on identical twins raised in different environments have demonstrated how external factors influence how genes are expressed. Additionally, research on organism adaptation to changing environments has shown how genetic traits can be modified over generations in response to environmental pressures.

Answer 5

Pinion trees bear cones every other year