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Three alleles are found at a locus coding for malate dehydrogenase (MDH) in the spotted chorus frog. Chorus frogs were collected from a breeding pond, and each frog's genotype at the MDH locus was determined with electrophoresis. The following numbers were found: M1/M1 8 M1/M2 35 M2/M2 20 M1/M3 53 M2/M3 76 M3/M3 62 Total 254 a) Calculate the frequencies of the M1, M2, and M3 alleles in this population. b) Using a chi-square test, determine whether the MDH genotypes in this population are in Hardy-Weinberg proportions.
Fruit flies have 4-main chromosomes. Fruit flies also have number of body markers that are useful for mapping genes to given chromosomes.
In this exercise you will be calculating the osmolarity of a carrot or a potato, which ever one you might have sitting around the house. You will need one potato or one carrot.
Assume that the couple had a daughter with a normal color vision and a widow's peak. What is the chance that she is homozygous for both genes?
In a generalized transduction experiment, phages are collected from an E. coli donor strain of genotype cys+ leu+ thr+ and used to transduce a recipient of genotype cys- leu- thr-.
The plot of novelist Rose Darkly's current work in progress, Despair at the Heat Death Cafe, revolves around the production of the "energy currency" of the cells of an alien species. What is one advantage of using E. coli for genetic engineering?
A pure breeding wildtype male fish has the following phenotypes: red fins, yellow eyes and frilly fins. It is crossed with a female fish with the mutant phenotypes.
Suppose that you conducted a tissue fractionation and that you collected aliquots at each step. Suppose that in step one you suspended tissue in 100 ml buffer then homogenized the tissue.
The result of mitosis is that daughter cells end up with similar number of chromosomes just as the parent cell.Explain how the results of mitosis differ between two processes of cell division?
If tacrine was given to a person, can you explain what would happen to levels of acetylcholine in the heart, skeletal muscles, and brain?
A mouse species has three phenotypes, black, brown and white. There are two genes responsible, and there is epistasis between the two genes. If two white mice mate, what is the probability that their first offspring will be white?
A Drosophila cross is carried out with a female that is heterozygous for both the y and bb mutations. Both genes are located in the X chromosome.
Show the restriction enzyme cut sites and the base pair distances between the cut sites on a circle. Bam HI= 190bp, 380 bp. Hind III= 570 bp. EcoRI= 165 bp, 405 bp. BamHI and HindIII= 30 bp, 190 bp, 350 bp. BamHI and EcoRI= 75 bp, 90 bp, 115 bp, 2..
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