The type of gene interaction in which the effect caused by a gene at one locus interferes with the effect caused by another gene at another locus is known as:
Correct answer: B. Epistasis
- A. Pleiotropy
- B. Epistasis
- C. Polygenic inheritance
- D. Gene linkage
- E. Crossing over
Explanation
Option A: Pleiotropy is a gene interaction in which a single gene affects multiple traits. Option B: The type of gene interaction in which the effect caused by a gene at one locus interferes with the effect caused by another gene at another locus is known as epistasis. Option C: Polygenic inheritance is a gene interaction in which multiple genes contribute to a single trait. Option D: Gene linkage is a phenomenon in which genes that are located close together on a chromosome are inherited together more often than would be expected by chance. Option E: Crossing over is a process that occurs during meiosis in which homologous chromosomes exchange genetic material.
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About Inheritance
Mendel's laws explain segregation, independent assortment and the prediction of genetic ratios using alleles, genotypes and phenotypes. The chapter also covers linked genes, recombination and crossing over during meiosis, then applies pedigree reasoning to X-linked recessive traits, which show different inheritance patterns in males and females.
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