What is the difference in terms of connectivity between a scale free network and random network?
What two possibilities are there to describe how gene fragments may have evolved?
Suppose you used the NCBI Blast server to look for a match to a fruit-fly gene. Suppose further that the best alignment contained this section of an alignment: Hit from database: XXXXXXXXXXXXXXNFSTSQ User sequence: SLEAEAAPASISPSNFSSSQ What do the Xs signify?
Suppose the Blast search returned 100 hits. Of these, 17 were false positives and we knew that there were 165 sequences in the database which should have returned a hit with our sequence. How many false negatives were there, and what is the sensitivity and selectivity of Blast in this instance?
What is the idea behind ?weighting? sequences in the package CLUSTAL W for multiple alignment? How are these weights calculated?
Why are Plasmodiophoromycetes not true fungi?
You receive a package that contains plants that may have been injured by herbicide drift or may have a virus. With no further information, how might you determine which is the problem?
For which nematode problem would you suggest use of a genetically resistant cultivar and why?
What are 2 features of Oomycetes that exclude them from the true Fungi?
What are 2 ways that bacterial diseases are different from most fungal diseases of plants?
Give the full scientific name (genus and species) name for a xylem-limited fastidious bacterium?
Why is it hard to keep genetically modified (GM) crops separate from non-GM crops throughout the manufacturing process?
How can all organisms share the same 4 bases DNA and still be so diverse?
what is the connection between a chromatid and a replicated DNA molecule?
Flower position, stem length, and seed shape were three traits that were studied by Mendel. Each is controlled by an independently assorting gene. If a plant that is heterozygous for all three traits was allowed to self- fertilize, what proportion of the offspring would be expected to show all three dominant phenotypes?