Question

environmental genetic variation quick check
epigenetic changes are generally (1 point)
not heritable genetic changes that are specific to an individual.
not heritable changes in gene structure of a population.
heritable \on/off switches\ for gene sequences due to environmental factors.
heritable changes in genetic sequences of a population.

Explanation:

Epigenetic changes are modifications that affect gene expression without altering the DNA sequence. They can be influenced by environmental factors. These changes can be passed on (heritable) and act like "on/off switches" for genes. For example, DNA methylation can turn genes off. The first option is wrong as epigenetic changes can be heritable. The second option is incorrect because it's about gene structure (epigenetic is about expression, not structure). The fourth option is wrong as it's about genetic sequences (epigenetic is not about changing the sequence).

Answer:

heritable "on/off switches" for gene sequences due to environmental factors.