In corn, a colored aleurone is due to the presence of an R allele; r/r is colorless. Another gene controls the color of the plant, with g/g being yellow and G_being green. These genes have a rate of recombination of 12%. What is the predicted frequency of colorless and yellow offspring when a Rg/rG is test-crossed? A. 0.88 B. 0.44 C. 0.04 D. 0.12 E. 0.06
Genetic Recombination
Recombination is crucial to this process because it allows genes to be reassorted into diverse combinations. Genetic recombination is the process of combining genetic components from two different origins into a single unit. In prokaryotes, genetic recombination takes place by the unilateral transfer of deoxyribonucleic acid. It includes transduction, transformation, and conjugation. The genetic exchange occurring between homologous deoxyribonucleic acid sequences (DNA) from two different sources is termed general recombination. For this to happen, an identical sequence of the two recombining molecules is required. The process of genetic exchange which occurs in eukaryotes during sexual reproduction such as meiosis is an example of this type of genetic recombination.
Microbial Genetics
Genes are the functional units of heredity. They transfer characteristic information from parents to the offspring.
In corn, a colored aleurone is due to the presence of an R allele; r/r is colorless. Another gene controls the color of the plant, with g/g being yellow and G_being green. These genes have a rate of recombination of 12%. What is the predicted frequency of colorless and yellow offspring when a Rg/rG is test-crossed?
| A. |
0.88 |
|
| B. |
0.44 |
|
| C. |
0.04 |
|
| D. |
0.12 |
|
| E. |
0.06 |
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