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Concept explainers
To review:
A plasmid having a restriction site for Hind III enzyme within a kanamycin resistance gene was cleaved with Hind III and was re-ligated. It was used to transform E.coli (Escherichia coli) K12 cells. From the culture plate, kanamycin resistant colonies were selected and electrophoresis of the plasmid DNA from these colonies was carried out. Most of the colonies with plasmid produce a single band, which migrated at the same speed as the original intact plasmid. A slow band in agarose gel electrophoresis was obtained as a product of ligation.
Introduction:
Agarose gel electrophoresis is standard lab procedure for a DNA (deoxyribonucleic acid) separation on the basis of size (length in base pair). Agarose gel electrophoresis uses an electrical field to mobilize negatively charged DNA molecule in an agarose gel matrix toward the positively charged electrode. A DNA molecule, when digested with restriction enzymes (tools of recombinant DNA technology or RDT), produces the bands of different sizes when subjected to electrophoresis. This technique is used for diagnostic purposes to determine the genetic defects.
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Chapter 17 Solutions
Essentials of Genetics (9th Edition) - Standalone book
- Identify the indicated tissue? (stem x.s.) parenchyma collenchyma sclerenchyma ○ xylem ○ phloem none of thesearrow_forwardWhere did this structure originate from? (Salix branch root) epidermis cortex endodermis pericycle vascular cylinderarrow_forwardIdentify the indicated tissue. (Tilia stem x.s.) parenchyma collenchyma sclerenchyma xylem phloem none of thesearrow_forward
- Identify the indicated structure. (Cucurbita stem l.s.) pit lenticel stomate tendril none of thesearrow_forwardIdentify the specific cell? (Zebrina leaf peel) vessel element sieve element companion cell tracheid guard cell subsidiary cell none of thesearrow_forwardWhat type of cells flank the opening on either side? (leaf x.s.) vessel elements sieve elements companion cells tracheids guard cells none of thesearrow_forward
- What specific cell is indicated. (Cucurbita stem I.s.) vessel element sieve element O companion cell tracheid guard cell none of thesearrow_forwardWhat specific cell is indicated? (Aristolochia stem x.s.) vessel element sieve element ○ companion cell O O O O O tracheid O guard cell none of thesearrow_forwardIdentify the tissue. parenchyma collenchyma sclerenchyma ○ xylem O phloem O none of thesearrow_forward
- Please answer q3arrow_forwardRespond to the following in a minimum of 175 words: How might CRISPR-Cas 9 be used in research or, eventually, therapeutically in patients? What are some potential ethical issues associated with using this technology? Do the advantages of using this technology outweigh the disadvantages (or vice versa)? Explain your position.arrow_forwardYou are studying the effect of directional selection on body height in three populations (graphs a, b, and c below). (a) What is the selection differential? Show your calculation. (2 pts) (b) Which population has the highest narrow sense heritability for height? Explain your answer. (2 pts) (c) If you examined the offspring in the next generation in each population, which population would have the highest mean height? Why? (2 pts) (a) Midoffspring height (average height of offspring) Short Short Short Short (c) Short (b) Short Tall Short Tall Short Short Tall Midparent height (average height of Mean of population = 65 inches Mean of breading parents = 70 inches Mean of population = 65 inches Mean of breading parents = 70 inches Mean of population = 65 inches Mean of breading parents = 70 inchesarrow_forward
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