Chapter 12 — LO 4 — Explain How Genetic Map Distance Affects Recombination

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6 Terms

1
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What are linked genes?

Genes on the same chromosome that tend to be inherited together.

2
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Why do distant genes recombine more often?

Crossovers are more likely to occur between genes separated by a greater distance.

3
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How do you calculate recombination frequency?

(Recombinant offspring ÷ total offspring) × 100%.

4
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What is one centimorgan?

A map distance corresponding to approximately 1% recombination frequency.

5
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Why does observed recombination frequency not exceed 50%?

At 50%, recombination patterns are indistinguishable from independent assortment.

6
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Why can two-point mapping underestimate long distances?

Multiple crossovers can restore parental combinations and remain undetected.