Because RNA is a _______, it is more likely than DNA to get damaged during chemical reactions
Fill in the blank with the appropriate word.
ANS:
catalyst
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In Drosophila melanogaster, the allele for red eyes is dominant over the allele for purple eyes, and the allele for a gray
body is dominant over the allele for a black body. A testcross was done to check for genetic linkage between the genes for these traits. The results for the offspring are listed below:478 flies with red eyes and a gray body 27 flies with red eyes and a black body 462 flies with purple eyes and a black body 33 flies with purple eyes and a gray body Which of the choices below best represents the map distance between the genes for these two traits?
a. 50.0 map units b. 30.0 map units c. 47.0 map units d. 27.0 map units e. 6.0 map units
What is the function of the ampr gene in a plasmid vector?
A) It provides several unique restriction enzyme recognition sites for opening up the plasmid. B) It allows a researcher to separate bacterial cells with a plasmid from those without a plasmid. C) It contains an origin for replication of the bacterial chromosome. D) It allows a researcher to distinguish plasmids with an insert from those without an insert. E) It is required for packing plasmid DNA into bacteriophage heads.
Generally, the homicide rate is higher in cities with large populations than in smaller municipalities. How, then, would you characterize homicides as population-controlling factors?
A) They are unlike parasites. B) They are unlike famine. C) They are like infectious diseases. D) They are like floods.
Polyploidy in plants
A. allows for adaptation to diverse environments. B. allows humans to create plants with unusual flowers. C. may alter the levels of gene expression. D. is very common. E. All of these statements are true regarding polyploidy in plants.