True or False Mutagens are chemical and physical factors that cause DNA mutation

Question

True or False Mutagens are chemical and physical factors that cause DNA mutations Epigenetic factors are environmental conditions that cause mutations Epigenetic factors act by chromatin remodeling influencing gene expression Some environmental toxins are mutagens while others are not The level of gene expression of a particular gene changes over the life time of an individual and is not influenced by epigenetic factors Identical twins share their genome but not their epigenome Within the lifetime of an individual, epigenetic factors can change susceptibility to adult health disorders and diseases such as diabetes, obesity, and cancer. Changes caused by epigenetic factor can't be reversed Some effects of epigenetic factors are limited to the individual, while others can be passed to future generations The effect of nutrition and diet of past generations can have influence gene expression in future generations Trans-generational effects of epigenetic factors can be initiated anytime during pregnancy Which of the following are epigenetic factors? (Mark all that apply) a. Environmental toxins b. Harsh and inconsistent discipline c. Cuddling and nurturing of babies d. Nutrition and diet

Explanation / Answer

1.True

2.True

3.True

4.True

5.False : It is affected by epigenetic factors.

6.True

7.True

8.False.It can be reversed ,for example the one that are a result of environmental factors can be reversed with change in enironmental conditions.

9.True

10.True

11.True

12.Correct answers are : a.Environmental toxins and d. Nutrition and diet

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