Linkage and Recombination — MCQ Practice
Interactive MCQ Practice
Test your knowledge. Click “Solve” to reveal options, select your answer, then check the result. 6 questions available.
In *Drosophila*, the genes for body color (B: grey, b: black) and wing size (V: normal, v: vestigial) are located on the same chromosome. A dihybrid female (BbVv) is test-crossed with a double recessive male (bbvv). The following offspring are obtained: Grey, normal wings: 965; Black, vestigial wings: 944; Grey, vestigial wings: 206; Black, normal wings: 185. What is the recombination frequency between the genes for body color and wing size?
Which of the following statements is INCORRECT regarding linkage?
If the recombination frequency between gene A and gene B is 20%, and between gene B and gene C is 10%, and between gene A and gene C is 30%, what is the most likely order of these genes on the chromosome?
In a test cross involving F1 dihybrid flies, more than 90% of the offspring resembled the parental phenotypes. This would indicate:
What is the maximum possible recombination frequency between two genes, and what does it signify?
Which of the following is NOT a factor that can influence recombination frequency?