Learn Before
Genetic Variation
Genetic variation refers to the genetic differences among individuals within a species, a factor that is crucial for adaptation to the environment. In humans, this variation originates with the process of fertilization, which involves an egg and a sperm.
0
1
Tags
Psychology
Social Science
Empirical Science
Science
OpenStax
Psychology @ OpenStax
Ch.3 Biopsychology - Psychology @ OpenStax
Ch.1 Introduction to Psychology - Psychology @ OpenStax
Introduction to Psychology @ OpenStax Course
OpenStax Psychology (2nd ed.) Textbook
Related
Genetic Variation
Behavioral Genetics
Gene-Environment Interactions
Structural Units in Human Genetics
Key Questions in Human Genetics Research
Genetic Influence on Cognition and Behavior
A researcher observes that identical twins, who share the exact same genetic makeup, are separated at birth and raised in different families. As adults, they both exhibit a similar predisposition to anxiety, despite having vastly different life experiences and upbringings. Which principle does this observation most strongly support regarding the biological foundations of behavior?
Explaining Sibling Differences
Learn After
Fertilization
Human Fertilization Process
Traits
Consider two isolated populations of a species. Population A exhibits a wide range of genetic differences among its members, while the individuals in Population B are genetically very similar to each other. If a novel and deadly disease emerges and spreads to both populations, which of the following outcomes is the most probable, and what is the underlying reason?
A researcher is comparing two pairs of siblings to understand the biological basis for differences in their psychological traits. Pair A consists of identical twins, who developed from a single fertilized egg. Pair B consists of non-identical (fraternal) siblings, who developed from two separate fertilized eggs. Why would the researcher expect to find a greater degree of genetic variation between the two individuals in Pair B compared to Pair A?