Asked by Elizabeth Xiong on Jul 02, 2024
Verified
Jonah and Jared are fraternal twins. Jonah is gay. What is the approximate likelihood that Jared is gay as well?
A) 5%
B) 10%
C) 20%
D) 50%
Fraternal Twins
are siblings born simultaneously during the same pregnancy, sharing about 50% of their genes, but are not genetically identical, stemming from two different eggs fertilized by two different sperm.
Sexual Orientation
A person's emotional, romantic, or sexual attraction to others, typically categorized as heterosexual, homosexual, bisexual, etc.
- Gain insight into the concept of sexual orientation, including its outward expressions, prenatal factors that might influence it, and the genetic basis.
Verified Answer
AC
ANDREA CAROLINA SALGADO BUSTOS6 days ago
Final Answer :
C
Explanation :
Fraternal twins share approximately 50% of their genetic material, just like any siblings, which means they could inherit similar or different genetic traits. Studies have found that the concordance rate for homosexuality in fraternal twins is around 20%, meaning that there is a 20% chance that a fraternal twin of a gay person will also be gay. Therefore, the approximate likelihood of Jared being gay is 20%.
Learning Objectives
- Gain insight into the concept of sexual orientation, including its outward expressions, prenatal factors that might influence it, and the genetic basis.
Related questions
Regarding the Possible Origins of an Individual's Sexual Orientation, Which ...
Twin Studies Suggest a Genetic Component to Sexual Orientation
Conclusive Research Has Not Been Found to Determine Whether or ...
The Idea That Maternal Genetics May Explain the Transmission of ...
Gina and Nanette Are Sisters and Both Are Lesbians ...