What is the most significant advantage of using RNAi to study development?
A) Geneticists have only been able to identify a subset of the genes involved in development.
B) Genetic studies of a single gene can be completed without creating new mutant organisms.
C) RNA is easy to isolate.
D) RNAi causes phenotypes not typical of in vivo development.
B) Genetic studies of a single gene can be completed without creating new mutant organisms.
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Responsible ranching is important to the health of riparian zones because ________
a. cattle movement inadvertently aids plant reproduction in riparian zones b. a few head of cattle can destroy a riparian zone if allowed to graze there without control c. around 70% of endemic species live in riparian zones d. cattle rely on the riparian zones for food and water
Suppose that you have a population of guinea pigs in
which two-thirds of the alleles for coat color specify black, and one-third specify white. According to the Hardy-Weinberg rule, what will be the ratio of these alleles in the gene pool in future generations, provided all the guinea pigs reproduce? a. 1:1 b. 2:1 c. 3:1 d. 6:1 e. 7:1
Which of the following techniques reveal(s) the presence of fungal cells in tissues?
A) Gram staining B) KOH treatment C) Gomori methenamine silver (GMS) staining D) Gram staining combined with KOH treatment E) both KOH treatment and Gomori methenamine silver (GMS) staining
List standard therapies and newer therapies for the treatment of cancer.
What will be an ideal response?