What is the difference in terms of connectivity between a scale free network and random network?

1951

---

What two possibilities are there to describe how gene fragments may have evolved?

2322

---

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?

2037

---

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?

2382

---

What is the idea behind ?weighting? sequences in the package CLUSTAL W for multiple alignment? How are these weights calculated?

2098

---

Why are Plasmodiophoromycetes not true fungi?

3174

---

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?

2073

---

For which nematode problem would you suggest use of a genetically resistant cultivar and why?

1993

---

What are 2 features of Oomycetes that exclude them from the true Fungi?

2053

---

What are 2 ways that bacterial diseases are different from most fungal diseases of plants?

2075

---

Give the full scientific name (genus and species) name for a xylem-limited fastidious bacterium?

3248

---

Why is it hard to keep genetically modified (GM) crops separate from non-GM crops throughout the manufacturing process?

2374

---

How can all organisms share the same 4 bases DNA and still be so diverse?

2757

---

what is the connection between a chromatid and a replicated DNA molecule?

2306

---

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?

4247

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