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A human gene was initially identified as having three exons and two introns. The exons are 456, 224, and 524 bp, whereas the introns are 2.3 kb and 4.6 kb.
a. Draw this gene, showing the promoter, introns, exons, and transcription start and stop sites.
b. Surprisingly, this gene is found to encode not one but two mRNAs that have only 224 nucleotides in common. The original mRNA is 1204 nucleotides, and the new mRNA is 2524 nucleotides. Use your drawing to show how this one region of DNA can encode these two transcripts.
Since it takes 40 min. to replicate the E. coli chromosome, how can the cell have a cell cycle of 35 minutes?
In a herd of Shorthorn cattle the frequency of the r allele is .4. Because of prevalence of pinkeye, white cows produce and average of 0.60 calves that reach puberty.
Construct-diagram a pediigree that clearly demonstrates the x-linked recessive pattern of inheritance. Use a made up trait and family history containing three generation and between 18 and 20 individuals with equal numbers of females and males in ..
Think about an experimental Drosophila population containing 5 males and 5 females (2N = 20) in a population. An autosomal locus (gene A) has allele A1 and A2 with frequencies 0.9 and 0.1
A section of the E. coli genome that encodes the pheM protein. Write out and label: the reverse complement, the mRNA sequence.
Explain the subdivisions and the sub-subdivisions of the ventral cavity and name an organ found in each.
Assume you are attempting to determine if the new DNA sample you have just received contains linear or circular molecules. Digestion using either RsaI or SauI alone produces two fragments.
You require to treat cells with Arsenite such that it has a final concentration of 10uM once it has been added to the cells.
Coherence is defined as a state where body systems (most importantly the heart and brain) are in-sync. Clarity of thought and emotional balance are the result.
Explain what type of growth you observed in the air dish. ooking at the five steps in viral replication can you identify some promising ways to prevent or control viral infections?
explain which is a key component of the cytoskeleton.
Coat color in cats is a codominant trait and is also located on the X chromosome. Cats can be black, yellow or calico. A calico cat has black and yellow splotches. In order to be calico, the cat must have an allele for the black color and an allel..
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