Chapter 1, Problem 1.23.14C

Identify the indicated structure. (Cucurbita stem l.s.) pit lenticel stomate tendril none of these

Identify the specific cell? (Zebrina leaf peel) vessel element sieve element companion cell tracheid guard cell subsidiary cell none of these

What type of cells flank the opening on either side? (leaf x.s.) vessel elements sieve elements companion cells tracheids guard cells none of these

What specific cell is indicated. (Cucurbita stem I.s.) vessel element sieve element O companion cell tracheid guard cell none of these

What 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 these

Identify the tissue. parenchyma collenchyma sclerenchyma ○ xylem O phloem O none of these

Please answer q3

Respond 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.

You 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 inches