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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.
What is the basic theory of biological evolution and what evidence is there to support this theory? Describe the two scientific models for evolution.
Draw and label the regulatory regions and transcriptional regions of a typical prokaryotic and a typical eukaryotic gene.
Describe what you observed in your cheek smear wet mount, direct stained slide, and indirectly stained slide. What were similarities and differences. Describe what you observed in your yeast wet mount, direct stained slide, and indirectly stained sli..
Describe the function of Cdc25 and Wee1 and why deficit of Cdc25 or excess of Wee1 can cause G2 arrest.
Given the following allele frequencies estimate the genotypic frequencies and explain how you calculate the genotypic frequencies from the allele frequencies for both generations it would be.
A patient has a stenotic mitral valve which has a reduced effective orifice area of 1.0 cm^2. The systolic ejection period is 330 milliseconds with a heart rate of 70 beats/min.
Assume you are studying the inheritance of flower color and seed color in navy beans and the yellow flower color is dominant over white and white seed color is dominant over beige.
The purpose of this exercise is to demonstrate the comparative effect of UV on three bacterial populations. This could have been accomplished without a cardboard or plastic cover. Why was the cover used.
Comparisons of amino acids sequences can shed light on the evolutionary divergence of related species. Would you be expecting all the proteins of a given set of living species to demonstrate the same degree of divergence.
In guinea pigs, white coat is recessive to black coat avy hair is recessive to straight hair. A breeder crosses a female guinea pig that is homozygous for white coat.
Determine what can a disease like familial hypercholesterolemia tell us about the effects of cholesterol on the people without the disease?
Draw a diagram of the poly-adenylation process. How do we know that the Poly A tail is added post-transcriptionally?
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