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Q1. In Drosophila melanogaster, vestigial (short) wings (vg) are caused by a recessive allele of a gene that independently assorts with a gene pair that influences body hair. Hairy (h) results in a hairy body. A cross is made between a fly with normal (wild) wings and a hairy body and a fly with vestigial wings and a normal (wild) body. The phenotypically normal F1 flies were crossed among each other, and 1024 F2 flies were reared. What phenotypes would you expect in the F2, and in what actual numbers (not ratios) would you be expecting to find them?
Q2. Free Response Essay: Describe the process of speciation. Comprise in the discussion the factors that can contribute to the maintenance of genetic isolation. Terms to include; genetic drift, isolation, allopatric, sympatric, natural selection, adaptation, polyploidy, disruptive selection, and any others you think relate.
Which of the subsequent statements is true about phylogeny. The ancestral group frequently has all the synapomorphies of the descendant species.W hat phenotypes would be seen in the f2 and in what proportion.
At another locus, sepia eyes are inherited as an autosomal (non sex linked) recessive. The presence of the white eye phenotype (x superscript w x superscript w in females, x superscript y in males) masks sepia phenotype, so regardless of the sepia ge..
In an experiment you are studying a neuron that receives synaptic inputs from two other neurons: one from neuron A and one from neuron B. Illustrate a separate graph for each value of Vm.
Sketch another graph showing the response to selection if the heritability, h2, of pesticide resistance is 0.8. Illustrate an experiment that you could use to measure how this population of beetles responds to the selection that occurs when the popul..
Approximately half of our vitamin K is synthesized by bacteria in the colon. Based on this information, why might taking a broad spectrum antibiotic produce frequent nosebleeds.
What would happen to heart rate and peripheral resistance? Would it be probable to build a working circuit without the inhibitory interneuron? If so, how would you do it? If not, why can't you do it.
Why is energy from fusion reactors, dissimilar that from fission reactors, so attractive from an environmental perspective. Consider the HIV enzyme called protease. The amino acid residues at the active site are highly hydrophobic.
What F1 phenotypic and genotypic ratios are formed from this cross . how may this affect the rate of protein synthesis.
Examine the nature of water and how its unique chemical properties impact water regulations in plants. Elucidate the structure and function of the leaf to water regulation.
Acetylcholine binds this membrane protein, which subsequently opens to allow sodium to enter the cell. Acetylcholine exerts its effect on what kind of transport protein.
In our population there are 300 red sea stars, 200 pink sea stars and 500 White Sea stars. How numerous total alleles for sea star colour are in this population.
Trace a route of air from the nares to an alveolus. Name subdivisions of organs where applicable, and discriminate between conducting and respiratory zone structures. how large a force does she exert on the sled.
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