4. If the A and C positions were moved farther apart as shown below, which of th

Question

4. If the A and C positions were moved farther apart as shown below, which of the flowing would you predict? 1) 2) 3) 4) A greater crossover of alleles at A and C Alleles at A, B, and C would be more tightly linking An increase in parent phenotypes in offspring A decreased crossover of alleles at A and C moved apart C. 5. Suppose the A, B, and C positions were located close together as shown below. How would this situation affect crossover frequency of alleles [Y, W, min] at these positions? 1) The frequency if +Wmin would increase 2) Crossover of alleles at other positions on the chromosome would increase 3) The frequency of YWmin would increase 4) Crossover of alleles at other positions on the chromosomes would decrease

Explanation / Answer

4. 1. A greater crossover of alleles at A and C

The frequency of crossing over increase with the increase in the physical distance between the two genes.

5. 3. The frequency of Y w min increase.

The genes are linked very closer crossing over will decrease. So the proportion of recombinant gametes decreases and the proportion of parental gametes increase.

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