How do you calculate recombination frequency in Drosophila?
Recombination frequency = # recombinants/total progeny x 100. Experimental recombination frequencies between two genes are never greater than 50%.
How is recombination rate calculated?
Genetic map length is the sum of genetic map lengths summing in units of cM over all chromosomes in each genome. The right most column, recombination events per chromosome, is calculated by dividing the genetic map length (cM/100) by the number of chromosomes.
What is the recombination frequency between gene Y and W in Drosophila?
Statement B: In Drosophila, the recombination frequency with respect to genes y and w is 1.3% and with respect to w and m is 37.2%.
What is recombination Drosophila?
Unlike most sexually reproduced organisms, Drosophila is peculiar since males are achiasmatic–that is, recombination does not occur during male meiosis. Therefore, autosomes that become fused to the ancestral Y chromosome (so-called neo-Y chromosomes) will be transmitted through males only.
What is the distance between gene Y and W in Drosophila in cM?
| Question | What is the distance between genes ‘y’ ( body colour) and ‘w’ (eye colour) of Drosophila?(a) 98.7 cM(b) 1.3 cM(c) 62.8 cM(d) 37.2 cM |
|---|---|
| Chapter Name | Test 5 |
| Subject | Biology (more Questions) |
| Class | 12th |
| Type of Answer | Video |
What is the recombination frequency in Morgan’s cross B on Drosophila?
The recombination frequency of the test cross progeny is always lower than 50%. Therefore, if any two genes are completely linked, their recombination frequency is almost 0%. The phenomenon of linkage was studied by the scientist T.H. Morgan using the common fruit fly or Drosophila melanogaster.
What are recombination frequencies?
A number that describes the proportion of recombinant offspring produced in a genetic cross between two organisms.
Is there recombination in male Drosophila?