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In Drosophila, allelic series of gene w+ determine the color of an eye. w+ determines red color (wild type), we determines eosin color and wa - apricot color. The allelic realtions are w+ > we > wa > w.
A fly with eosin eyes was crossed with a fly with apricot eyes. Write down the cross showing the genotypes for P. F1, F2 and a ratio observed in F2.
why it is important to conserve population level diversity.
A female rabbit with hemophilia, rickets and a tail was mated to a male rabbit that did not have hemophilia or rickets but lacked a tail.
Lysozyme was assayed at bacterial cell wall, = 2.5x10-8 g. The Km for the substrate = 6x10-3g. At the end of one minute 2.5% of the cell wall hydrolysed.
Explain what is meant by state the genetic code is triplet and nonoverlapping? What did the finding that DNA base compositions varied greatly among different organisms suggest about the genetic code.
A double-stranded fragment of viral DNA, one of whose strands is shown below, encodes two polypeptides called vir-1 and vir-2. Adding this double stranded DNA fragment to an in vitro transcription and translation system yields peptides of 10 residues
Think about the meaning of the term ecology How do the ideas of energy and chemical cycles, community structure, biodiversity and succession fit together to form basis of the way natural world works?
Chooses the statement that best describes a buffer. A buffer prevents pH of a solution from changing while an acid or base is added.
what is the final concentration be in micromolar
During the process of meiosis in the female (oogenesis), two meiotic divisions occur. This leads to the formation of the ovum, and three polar bodies. These divisions involve an unequal division of the cytoplasm.
The forces governing the diffusion of a gas through a biological membrane include the pressure difference across the membrane (change in P), the cross sectional area of the membrane.
a monohybrid cross is carried out between pea plants with round and wrinkled seeds. A single round seed is chosen from the F2 generation, and its DNA examined by electrophoresis. what is the probability that the gel pattern appears?
create a scenerio in which the population evolves to an intermediate allele frequency, in other words neither allele is lost from the population. Test your scenerio with different initial allele frequencies to see if it produces consistent results..
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