Discover the significance of studying fraternal twins in genetic research. Understand the unique blend of shared environments and differing genetic codes. Grasp how their study enlightens the genetics vs environment debate.
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Questions & Answers
Why do researchers find the study of fraternal twins important?
a. They share similar environments and the same genetic code
b. Data collected concerning their similarities is necessary for calculating heritability
c. They are the same age and are usually raised in similar environments, but they do not have the same genetic code
d. Results allow us to determine exactly how disorders ranging from heart disease to schizophrenia are inherited
e. They are typically raised in less similar environments than nontwin siblings
Step 1 of 2
Fraternal twins, also known as dizygotic twins, occur when two separate eggs are fertilized by two different sperm. They share the same womb and are typically born at the same time, which means they are exposed to similar prenatal environments. Additionally, fraternal twins often grow up together and share similar familial and environmental factors.