Question 86 - (a) Male with genotype GGmm and phenotype gray wingless mates with female with genotype ggMM and phenotype black winged in fruit flies. G is dominant to g in color. M is dominant to m in wing shape. If the actual distribution of the second generation of the fruit flies was as follow : 890 gray wingless, 900 black winged, 115 gray winged, 95 black wingless, calculate the recombination frequency betwen the two genes and distance in recombination units. Let 1 map unit = 1 % recombination. (b) A DNA molecule has 180 base pairs and 20 % adenine. How many cytosine nucleotides are present in this molecule of DNA?
- 1 Answers
- 1794 Views
- I also Faced
- E-Mail Answers
Answer Posted / kangchuentat
Answer 86 - (a) Phenotypes of parents = gray wingless, black winged. Phenotypes of recombinant children = gray winged, black wingless. Number of recombinant children = gray winged + black wingless = 115 + 95 = 210. Recombination frequency between the two genes = Number of recombinant children / Total number of childen = 210 / (210 + 890 + 900) = 0.105 or 10.5 % = distance = 10.5 map units. (b) Base pairs number of adenine = 180 x 0.2 = 36 = base pairs number thymine. Base pairs number of guanine = base pairs number cytosine = (Total number of base pairs - 2 x Base pairs number of adenine) / 2 = (180 - 2 x 36) / 2 = 54. The answer is given by Kang Chuen Tat; PO Box 6263, Dandenong, Victoria VIC 3175, Australia; SMS +61405421706; chuentat@hotmail.com; http://kangchuentat.wordpress.com.
| Is This Answer Correct ? | 0 Yes | 0 No |
Post New Answer View All Answers
Explain how do you design a vapor-liquid separator or a flash drum?
What is % of piping & equipment cost for a chemical plant having batch process?
After conducting an internet search for ways to reduce energy costs, I found a recipe for whitewashing that is said to reflect sunlight. The recipe calls for 20 pounds hydrated lime to 5 gallons water to 1-quart polyvinyl acetate. What is a good source of polyvinyl acetate that I can buy at a local store?
Define a surfactant?
What are the assumptions made for kynch theory?
How can the particle size distribution be determined in a given bulk solid?
How much maximum power can be generated by 320v, 10kg-cm synchronous motor if shaft is rotated mechanically at 50 to 60 rpm?
How many years you are having experience in supervising others in lab environment?
Are there flow velocity restrictions to avoid static charge build up in pipelines?
why traction voltage is 25kv
Explain how can you estimate a gas flow based on two pressure measurements?
What are the advantages of using gear pumps?
Is there any way to repair a valve that is passing leaking internally without taking our process offline?
If sum one has HAL placement paper plz mail me ,I m Chemical Engg.my id is er.kotnala@gmail.com
What is a good source of surfactant information on the internet?
