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Consider the following two genotypes: AABB, aabb where A and B are dominant and a and b are recessive.
1. What is the genotype of the F1 progeny from an AABB x aabb cross?2. Construct a Punnett Square of the F1 self-cross (i.e., F1 x F1). What are the genotypic ratios from this testcross? What are the phenotypic ratios?3. Construct a Punnett Square of the F1 genotype with the AABB parental. What are the genotypic ratios from this cross? What are the phenotypic ratios?4. Construct a Punnett Square of the F1 genotype with the aabb parental. What are the genotypic ratios from this cross? What are the phenotypic ratios?5. If you had an organism that was A-B- and wanted to determine its exact genotype, which cross would you use? Explain your answer.
Distinguish between the rate of speciation in a higher taxon and its rate of diversification. What are the possible relationships between the present number of species in a taxon,
A physician performing a heart transplant mistakenly connects inferior and superior vena cava to left atrium and the pulmonary vein to the right atrium.
method of acclimating to a lower temperature environment. How would you expect the fatty acid complement in the bacterial membrane to change in response to the lower temperature? Why?
Three patients are in intensive care buy will survive. One has brain damage from a stroke, one has severe heart muscle damage from a heart attack and the third has a severely damaged liver from a car accident.
The decomposition of N2O5 in CCl4 proceeds as follows: 2N2O5 --> 4NO2 + O2. The rate law is first order in N2O5. At 64 degrees Celsius, the rate constant is 4.82 x 10^-3 S^-1.
Predict how a mutation that knocks out the glnB gene of E. coli would affect the expression and activity of glutamine synthetase and what affect this gene knockout would have on the cell.
Every cell in the human body has two alleles that condense into single chromosomes held together through a centromere. These sister chromaatids replicate and pair with newly made homologous chromosomes.
A swarm of insects blows out to sea in a storm. They arrive at a tiny island and form a new population. After many generations, they have diverged from the source population on the mainland.
The F1 generation, which resulted from cross between the two lines, has a mean of 135kg and a variance of 16kg. What is the broad sense heritability (H2) for milk yield in this population.
A scientist has discovered a new cell. illustrate, in detail, ALL the ways the scientist could decide if the cell comes from a plant or an animal. How several of these result in the release of oxygen into the atmosphere?
E.coli and S.epidermidis were chosen to represent Gram-negative and Gram-positive bacteria, respectively. For a given antibiotic, is there a difference in susceptibility between the Gram-positive and Gram-negative bacteria?
In horses, black coat colour is dominant over chestnut. In gait, trotting is dominant over pacing. If a mare with a genotype of bbTt is bred to a stallion with a genotype of BbTt, what are the chances of a chestnut, pacer foal.
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