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The protostome developmental sequence arose just once in evolutionary history, resulting in two main subgroups-Lophotrochozoa and Ecdysozoa. What does this finding suggest?
1) The protostomes are a polyphyletic group.2) Division of these two groups occurred after the protostome developmental sequence appeared.3) These two subgroups have a common ancestor that was a deuterostome.4) The lophotrochozoans are monophyletic.
The brillig, slithy and vorpal genes all are located on chromosome VII in F. bandersnatchi. Their positions relative to each other are shown below.
Illustrate the structures of the sun including the interior, surface and atmosphere and what type of science is done to come to these conclusions. How does the structure of the sun compare to structure of the earth.
Once two populations of a species have become allopatric with some barrier preventing gene flow between them, the two populations are free to diverge genetically. One mechanism for divergence that is thought to result in rapid divergence is sexual..
Compare the early decisions and patterns required to generate early gastrula from the fertilized zygote in Frog, Chick and Mouse.
In agrobacterium transformation, after infecting leaf discs with agrobacterium, they are incubated on the co-cultivation plates and transferred to the callus-inducting media.
Find and share case studies on organizations that did or did not effectively implement OSHA's guidelines for safety. Determine the medical and legal consequences of non-compliance?
Explain what type of training is most beneficial for ice skating and why. Are there adverse side-effects on the body from such long-term and/or intense training?
Compute renal clearance of X given the following data: GFR = 100 mL/min, urine flow rate = 5 mL/min, plasma concentration of X = 10 mg/mL,
You have an F- strain of E. coli that is resistant to strepto- mycin (Str(r)) but requires the following amino acids for growth on minimal medium: arginine, cysteine, methionine, phenylala- nine, and proline.
When digested DNA is analysed using agarose gel electrophoresis the total size of fragments sometimes does not add up to the size of the original DNA molecule. How can this be explained and how can this be seen in ethidium bromide stained agarose ..
A female neonate is noted at birth to have a gross deformity of her lower back. Examination of the subcutaneous scar reveals disorganized neural tissue with entrapment of nerve roots. What is the appropriate diagnosis?
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,
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