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Q. Which of the subsequent statements is true about phylogeny, as represent by a phylogenetic tree?
I) Descendant groups (branches) from the similar node do not necessarily share any derived characters.
II) A monophyletic group could be properly based on convergent features.
III) The ancestral group frequently has all the synapomorphies of the descendant species.
In examining a large sample of yeast colonies on a petri dish, a geneticist finds an abnormal-looking colony that is very small. This small colony was crossed with wild type, and products of meiosis (ascospores) were spread on a plate to produce c..
Think about a mature megaspore mother cell containing twenty DNA molecules to answer the following questions concerning meiosis.
On an autosome, genes A and B are twenty map units apart. An AABB male mates with an aabb female. What % of the gametes produced by their hybrid offspring will be Ab?
Determine which of the following is not a function of membrane proteins? Selective permeability of the membrane is primarily determined by membrane phospholipids.
Which of the following bodies of evidence caused scientists to completely overhaul their traditional views of animal phylogeny?
Discuss why can not hot water work with biological soap powders that are synthesized with the enzymes necessary to break down certain stains?
He determined that the rising phase of the action potential in ltxnsp neurons was due to a sudden increase in PK. What should be the sign and approximate amplitude of the voltage change of these action potentials? Why?
What, if anything, is wrong with the following statement: "the oxygen consumed during the oxidation of glucose is animal cells returned as part of CO2 to the atmosphere." How could you support your answer experimentally?
Which of the following tasks CANNOT be performed by earthworms?
Diatoms are mostly asexual members of the phytoplankton. Diatoms lack any organelles that might have the 9+2 pattern. They obtain their nutrition from functional chloroplasts, and each diatom is encased within two porous, glasslike valves.
A genetic disorder, dyskeratosis congenital (DKC), is associated with mutations in the protein subunits of telomerase, the enzyme responsible for replicating the end of eukaryotic chromosomes.
This is "new methylene blue" stained blood. What cell is stained? What are the "inclusion bodies" called in this case of thalassemia? Describe this slide (is it peripheral blood smear/bone marrow aspirate or biopsy, and is it normal/abnormal?).
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