The process of determining the locus for particular biological traits includes?
Correct answer: C. Gene mapping
- A. Replication
- B. Recombination
- C. Gene mapping
- D. None of these
Explanation
Option A: Replication refers to the process of DNA replication that occurs before cell division. During replication, the DNA molecule unwinds and each strand serves as a template for the synthesis of a new complementary strand. However, replication itself is not directly involved in determining the locus of specific biological traits. Option B: Recombination, also known as genetic recombination, is the process by which genetic material is exchanged between two homologous chromosomes during meiosis. It results in the creation of new combinations of genetic information. Option C: Gene mapping involves determining the specific location or locus of a gene on a chromosome. It is the process of identifying the relative positions of genes and their distances from each other. Gene mapping can be done through various techniques, including linkage analysis, association studies, and physical mapping. These methods allow researchers to understand the genetic basis of traits, identify disease-causing genes, and study inheritance patterns. Option D: This option is incorrect
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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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