When two pairs of homologous chromosomes join for crossing-over, the complex is called a ____
a. kinetochore
b. centromere
c. sister chromatid
d. tetrad
e. chiasmata
ANSWER: d
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Which two experiments best demonstrate that the gene AP3 is important for flower development? (Choose two)
_____ When a wild type AP3 transgene is expressed in an AP3 mutant, the plant produces normal flowers. _____ When AP3 is deleted, the plant produces deformed flowers. _____ When the genes PI and AP3 are both deleted, the plant produces deformed flowers. _____ When a wild type AP3 transgene is overexpressed, the plant produces normal flowers. _____ When a wild type AP3 transgene is overexpressed, the plant produces deformed flowers. _____ When AP3 is duplicated, the plant produces deformed flowers. Clarify Question · What is the key concept addressed by the question? · What type of thinking is required? · What key words does the question contain and what do they mean? Gather Content · What do you already know about the flower development genes? Consider Possibilities · Consider the different answer options. Which can you rule out? Choose Answer · Given what you now know, what information and/or problem solving approach is most likely to produce the correct answer? Reflect on Process · Did your problem-solving process lead you to the correct answer? If not, where did the process break down or lead you astray? How can you revise your approach to produce a more desirable result?
Which gas is considered a greenhouse gas?
A) water vapor B) carbon monoxide C) gaseous nitrogen D) nitrous oxide
Which one of the following sexually transmitted diseases is caused by bacteria?
A) chlamydia B) genital herpes C) hepatitis B D) genital warts E) trichomoniasis
Which of the following is not a statistical value often used to represent a sample when evaluating QTLs?
A) mean B) mode C) variance D) standard deviation