AP PSYCHOLOGY

BIOLOGICAL BASES OF BEHAVIOR

BEHAVIOR GENETICS

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Epigenetics is?
A
the study of the structure and function of genes at a molecular level
B
A set of theories that attempts to explain inheritance and biological diversity
C
the study of heredity and the variation of inherited characteristics.
D
the study of environmental influences on gene expression that occur without a DNA change
Explanation: 

Detailed explanation-1: -Epigenetics is the study of how your behaviors and environment can cause changes that affect the way your genes work. Unlike genetic changes, epigenetic changes are reversible and do not change your DNA sequence, but they can change how your body reads a DNA sequence.

Detailed explanation-2: -Epigenetic processes, including DNA methylation, histone modification and various RNA-mediated processes, are thought to influence gene expression chiefly at the level of transcription; however, other steps in the process (for example, translation) may also be regulated epigenetically.

Detailed explanation-3: -… Epigenetics (also sometimes called epigenomics) is a field of study focused on changes in DNA that do not involve alterations to the underlying sequence. The DNA letters and the proteins that interact with DNA can have chemical modifications that change the degrees to which genes are turned on and off.

Detailed explanation-4: -The epigenetics does not involve a change in the sequence of DNA. This sequence of DNA cannot be altered permanently. The given statement in this option is false, hence this option is the correct choice.

Detailed explanation-5: -Epigenetics serves as a link between the environment and gene expression. Epigenetics refers to a set of reversible heritable changes that occur without a change in DNA sequence.

There is 1 question to complete.