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Water snakes are common in the area around Lake Erie. They live on the mainland as well as islands in the lake. The island and mainland populations are relatively isolated, but migration does occur. Interestingly, selection favors banded water snakes on the mainland and unbanded on the islands. Bandedness is controlled by one locus with two alleles: banded (B1) and unbanded (B2) with banded being dominant. Each generation, some proportion of snakes migrates from the mainland to the island. On the island, the frequency of B1 is very low (0.1). On the mainland it is much higher (0.9). Only 10% of the mainland individuals migrate successfully to the island. After migration, random mating occurs (no sexual selection). Each population then returns to HW equilibrium in the next generation, and selection occurs before the next bought of migration. The selection coefficient against banded water snakes on the island is 0.2 and it is 0 for the unbanded water snakes. What is the frequency of B1 after migration and selection? Please show all your steps.
What is the definition for sporadic in epidemiology?
Sickle-cell anemia is caused by a mutation in the globin gene. Heterozygotes for the Hbs disease allele have some protection from malaria relative to wild-type, but Hbs homozygotes rarely live to produce offspring. 50 individuals homozygous f..
What is Found between the two pleural cavities and contains the heart, thymus gland, lymph and blood vessels, trachea, esophagus, and nerves
The hypothetical OxyA protein is a surface protein that may have a role in attachment to the surface of the intestinal epithelium but there is evidence that it has a role in invasion. Write the structural formula for isoamyl alcohol.
In 100 - 200 words concisely explain the adaptations of the crabs to the various abiotic factors in the inter-tidal zone in the mangrove ecosystem which include oxygen levels, salt levels, freshwater availability, pH, wind speed, wave action, and ..
Which of the following clients is at most risk for Osteoporosis?
In 350-500 words explain what do you see as the conflicts between customizing patient care to the needs of an individual patient and standardizing care based on research?
How many distinct molecular mechanisms might be responsible for converting a proto-oncogene into a potent oncogene? What are they and how might they be responsible for the converting?
The complete oxidation of one glucose molecule yields thirty or more ATP. Glucose catabolism includes glycolysis, pyruvate oxidation, and the citric acid cycle.
3. Now let's attach some meaning to genotypes. As you see from the previous problems, the genotype is an expression of the actual genetic makeup of the organism. The phenotype is the observable result of the genotype, i.e., what the organism looks li..
A population of cats can be either black or white; the black allele has complete dominance over the white allele. Given a population of 1,000 cats.
How much protein to consume to gain mass for 18 year old 170 pounds.
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