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Female Drosophila heterozygous for three recessive mutations e (ebony body), st (scarlet eyes), and ss (spineless bristles) were testcrossed, and the following progeny were obtained: Phenotype Number wild-type 67 ebony 8 ebony, scarlet 68 ebony, spineless 347 ebony, scarlet, spineless 78 scarlet 368 scarlet, spineless 10 spineless 54
(a) What indicates that the genes are linked? (b) What was the genotype of the original heterozygous females? (c) What is the order of the genes? (d) What is the map distance between e and st? (e) Between e and ss? (f) What is the coefficient of coincidence? (g) Diagram the crosses in this experiment.
how to Analysis of base composition from DNA. Using this data predict the % of adenine. If the same were detected in Tobacco Mosaic Virus [TMV], will it be possible to predict the % of adenine. This job gives reasons.
We did a lab for action/absorption spectrum where we covered leaves with different colored plastic. What are the chemical and physical properties and the lytic/latent cycles of animal and plant viruses
Suppose that a typical stomach pH of 2.0, how many times more concentrated are the hydrogen ions inside your stomach than in milk?
The final elution of your miniprep plasmid DNA has a concentration of 250 ng/uL. You need to load 500 ng on an agarose gel to be able to see the DNA.
A forty-two year old woman decides to lose weight on a diet prescribed by an anorexic friend. She loses about thirty pounds in 45 days, but her serum potassium level falls to 2.1 mmol/L.
Tina is consuming 12 mg of iron per day. Her RDA is 15 mg. She has no condition warranting a greater-than-normal need for iron. Which of the statements is true about her consumption of this nutrient.
In 2010, under its WaterSense program, EPA began promoting showerheads that produce still-lower flows of two gallon every minute.
Toxic Chemicals in the tissues of organisms higher up in the food chain. are more concentrated than they are in the environment.
Describe the molecular events that generate the "dark current" in photoreceptor cells;define the impact of this cycle on the typical resting.
Where does the label show in mevalonate. A spherical ball of solid, nonporous naphthalene (as in a "moth ball") is suspended in still air; naphthalene ball slowly sublimes, releasing the naphthalene into the surrounding air by molecular diffusion lim..
create a scenerio in which the population evolves to an intermediate allele frequency, in other words neither allele is lost from the population. Test your scenerio with different initial allele frequencies to see if it produces consistent results..
The sickle cell allele remains quite high populations of those with African Ancestry, and worldwide distribution of the sickle cell gene matches very closely to the worldwide distribution of Malaria.
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