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In parakeets, two autosomal genes (located on different chromosomes) control the production of feather pigments. Gene B controls the production of blue pigment, and gene Y controls the production of yellow pigment. Known recessive mutations in each gene result in the loss of pigment synthesis. Two green parakeets are mated and produce green, blue, yellow, and albino progeny.
A. Based on this information, explain the pattern of inheritance. Be sure to include the genotypes of the green parents and all four phenotypic classes, as well as the fraction of the total progeny that each phenotypic class represents in your answer.
B. The parental (green) parakeets are the progeny of a cross between two true-breeding strains. What two types of crosses between true-breeding strains could have produced the green parents? Indicate the genotypes and phenotypes for each strain?
Your favorite patient has just had surgery. After surgery, Bactroban was applied. After a few days, you notice an infection around incision. Even though more bactroban is applied, the infection persists.
Describe the events leading to a skeletal muscle twitch starting with neurotransmitte release from a somatic motor neuron.
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In a mating in 2-individuals with blood type AB, who are both heterozygous for the Bombay phenotype , what percentage of the offspring are expected to appear as having blood type O?
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express how this hormone leads to an activation of fatty acid oxidation and explain why this adaptation leads to a gradual but pronounced raise in plasma ketone bodies.
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The BBC carried the following posting on its web site of 13th October 2011. "Alongside the obesity strategy, ministers also announced new recommended levels of energy intake following a review by advisers.
why is photosynthesis described in terms of light-dependent and light independent reactions? how do these reactions differ?
Determine which of the following molecules would double-negative T cells fail to express?
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