AP BIOLOGY

Detailed explanation-1: -The closer two genes were to one another on a chromosome, the greater their chance of being inherited together. In contrast, genes located farther away from one another on the same chromosome were more likely to be separated during recombination.

Detailed explanation-2: -If two genes are far apart, for example at opposite ends of the chromosome, crossover and non-crossover events will occur in equal frequency. Genes that are closer together undergo fewer crossing over events and non-crossover gametes will exceed than the number of crossover gametes.

Detailed explanation-3: -If the genes are close together on the chromosome, the recombination frequency is very small. If the genes are far apart on a chromosome, or on different chromosomes, the recombination frequency is 50%.

Detailed explanation-4: -Specifically, the pair of genes with the largest recombination frequency must flank the third gene: Recombination frequencies are based on those for fly genes v, cv, and ct, as given in D.

Detailed explanation-5: -If two genes are located far apart from each other on a chromosome, how will the frequency of recombination get affected? The further apart two genes are on a chromosome the higher the chance of recombination.