How many types of genomic mapping are there?
Correct answer: A. 2
- A. 2
- B. 4
- C. 5
- D. None of these
Explanation
Genomic mapping is commonly divided into two main types: genetic mapping, based on recombination frequency, and physical mapping, based on actual DNA distances. Students may choose 4 because several individual mapping techniques exist, but the broad categories are two.
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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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