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Multiple Choice
Which of the following statements correctly describes gene linkage?
A
Gene linkage is the phenomenon where genes are expressed at the same time in a cell.
B
Gene linkage occurs when genes are located on different chromosomes and are inherited independently.
C
Gene linkage refers to genes located close together on the same chromosome that tend to be inherited together.
D
Gene linkage is the process by which alleles are exchanged between homologous chromosomes during meiosis.
Verified step by step guidance
1
Understand the concept of gene linkage: Gene linkage refers to the tendency of genes that are located close to each other on the same chromosome to be inherited together during meiosis. This is because they are less likely to be separated by recombination events.
Differentiate between linked and unlinked genes: Linked genes are located on the same chromosome and tend to be inherited together, whereas unlinked genes are located on different chromosomes and assort independently according to Mendel's law of independent assortment.
Identify the correct statement: The correct description of gene linkage is that it involves genes located close together on the same chromosome that tend to be inherited together.
Eliminate incorrect options: The other statements provided are incorrect because they either describe independent assortment (genes on different chromosomes) or processes unrelated to gene linkage, such as gene expression or recombination.
Summarize the key point: Gene linkage is an important concept in genetics that affects how traits are inherited, particularly when genes are located near each other on the same chromosome.