Locus of a gene on a chromosome means its:
Correct answer: A. Position
- A. Position
- B. Function
- C. Start point
- D. End point
Explanation
The locus of a gene on a chromosome refers to its specific location or position on the chromosome. It is the precise point on the chromosome where the gene is situated, and it is usually described by its chromosomal coordinates (e.g., 3q21, meaning the gene is located on the long arm of chromosome 3, at position 21).
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About Gene Linkage and Crossing Over
Linked genes lie on the same chromosome and tend to pass together, unlike genes that assort independently on different chromosomes. The topic connects linkage with homologous pairing, crossing over during prophase I of meiosis, recombinant and parental offspring, and recombination frequency as an estimate of gene distance.
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