Question

chapter 03 quiz: the biological bases of behavior
total points: --/20
epigenetics is
the study of heritable changes in gene expression that do not involve changes to the dna sequence.
traits that are controlled by many genes, not just one.
the process of determining the location and chemical sequence of specific genes.
the study of heritable influence by examination of blood relatives.
in evolutionary theory, an adaptation is
a variation in reproductive success.
the reproductive success of an individual organism.
an inherited characteristic that increased survival or reproduction at the time it emerged.
how natural selection operates on individuals, not populations.

Explanation:

1. For the epigenetics question: Epigenetics focuses on heritable gene expression changes that occur without altering the underlying DNA sequence. The other options describe polygenic traits, gene sequencing, and behavioral genetics studies of relatives, respectively, which are not the definition of epigenetics.
2. For the evolutionary adaptation question: In evolutionary theory, an adaptation is an inherited trait that improved an organism's ability to survive and reproduce when it first appeared. The other options describe reproductive variation, individual reproductive success, and a misstatement about natural selection's scope, which do not match the definition of an adaptation.

Answer:

1. Epigenetics is: the study of heritable changes in gene expression that do not involve changes to the DNA sequence.
2. In evolutionary theory, an adaptation is: an inherited characteristic that increased survival or reproduction at the time it emerged.