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Question: Consider Mendel's cross of pea plants with smooth, yellow seeds with pea plants with green, wrinkled seed that was reviewed in the Introduction. What if the "S" and "Y" genes were linked (on the same chromosome) instead of independently assorting. Assume that S and Y alleles always are inherited together (remain together on the same chromosome) and that s and y alleles always are inherited together. What F2 phenotypic ratio would Mendel have observed if this had been the actual situation?
Question: Why is immunogold electron micrography useful? Be sure to describe how it works in your explanation, please.
Explain a specific example of a cross in two parents, each homozygous for different traits, which would result in a phenotype that is distinct from either parental phenotype.
To be able to properly analyze a sample of DNA, you need to have at least 1 ug of the DNA of interest. Assumptions: PCR is run with 30 cycles; Molecular weight of nucleotide = 330 g per mole for a single stranded DNA.
Describe a signaling pathway deregulated in cancer that involves pRb and p53 as players. Have any advancements been made in the understanding of these pathways since the provided review was written?
A section of the E. coli genome that encodes the pheM protein. Write out and label: the reverse complement, the mRNA sequence.
What is the total ocean area that (trillion m2) that can be classified as open ocean, that is, ocean that is greater than 960 km from the next land.
Place the following characters on a phylogeny of fungi (with animals as an outgroup), Flagella, Multicellularity, Non-motile sperm, Arbuscular mycorrhizae, Macroscopic reproductive structures.
The problem refers to the MN and ABO loci mentioned in class. It also refers to Rh locus, which is responsible for the positive/negative part of the blood type.
Some malignant tumors remain localized and encapsulated, at least for a time; an illustration is carcinoma in situ in the ovary or breast. Share your thoughts to describe this phenomenon.
Use chi-square test, test whether these two loci show independent assortment? How would you explain the frequency of the progeny genotypes?
A microbiologist must culture a patient 's feces for in testinal (enteric) pathogens. Which of the following meida would he likely use. What is the purpose of resazurin in reducing media.
lex A is an E. coli gene whose product regulates the transcription of certain target genes that are located at different positions in the bacterial chromosome.
If sigma(70) and RpoS recognize different promoter sequences, and some genes have both a sigma(70) promoter and an RpoS promoter, then explain how either sigma factor could activate transcription of those genes.
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