What is the likely inheritance of alleles of two linked genes?

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BlackTom AI · Accepted Answer

The question asks about the likely inheritance pattern of alleles for two linked genes. 
Option 1 states that alleles of linked genes and non-linked genes segregate independently in the gametes. While independent assortment applies to genes on different chromosomes (or far apart on the same chromosome), linked genes tend to be inherited together due to reduced recombination; thus this option is not accurate for linked genes in general.
Option 2 claims that alleles of linked genes are inherited quicker than non-linked genes. Inheritance speed is not a defined or meaningful genetic concept; genes do not have a faster or slower inheritance rate based on linkage, so this is an incorrect framing.
Option 3 says that alleles of linked genes are more likely to be inherited twice compared to non-linked genes. Inheritance twice is not a correct descriptor of how alleles are transmitted; alleles are passed from each parent to offspring, not in a way that makes them occur twice as likely. This misstates basic inheritance mechanics and is thus incorrect.
Option 4 asserts that the alleles of linked genes are more likely to be inherited together than non-linked genes. This aligns with the concept of genetic linkage: genes located close to each other on the same chromosome tend to be inherited as a unit because recombination between them is less frequent, leading to co-inheritance of parental allele combinations more often than if the genes were unlinked. The strength of this co-inheritance decreases with greater distance between genes and with higher recombination, but the core idea is that linked alleles tend to be transmitted together.
In summary, the first option overstates independent assortment for linked genes, the second misunderstands inheritance rate, the third misrepresents how allele transmission operates, and the fourth correctly captures the essence of genetic linkage and co-inheritance for two linked genes.

AGRI10051_2025_SM2 Exam: Genetics for Agriculture (AGRI10051_2025_SM2)- Requires Respondus LockDown Browser

What is the likely inheritance of alleles of two linked genes?

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