Answered: You are responsible for landscaping a…

Human Anatomy & Physiology (11th Edition)

11th Edition

ISBN:9780134580999

Author:Elaine N. Marieb, Katja N. Hoehn

Publisher:Elaine N. Marieb, Katja N. Hoehn

Chapter1: The Human Body: An Orientation

Section: Chapter Questions

Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...

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You are responsible for landscaping a very large urban park. You choose a popular flowering garden plant, the hydrangea, to plant throughout the park. The nursery you purchased the plants from said that the flowers should be pink. After a few months, though, you find—to your surprise—that the plants throughout the park display a variety of flower colors ranging from purple and blue, to pink and white, and finally, to all shades in between.

After a suggestion from a friend, you test the soil where each plant was planted, and you determine that the color of the flowers seems to correlate with the acidity of the soil in which the plant was placed.

Choose the answer that best fits the blank. The parentheses after the blanks are the choices.

Since the flowers have shown such a broad range of colors, with no clear distinction between one color type and the next, this is an example of _________ (continuous variation, codominance, pleiotropy). The acidity of the soil is an example of ___________ (an environmental, a codominant, an incomplete dominance) effect on the phenotype of the flowers.

The image displays a series of hydrangea flowers illustrated to show color variation. The flowers are organized in two rows with three flowers each, showing a gradient from pink to blue:

1. **Top Row:**
- The first flower is pink with light green leaves.
- The second flower is light purple with light green leaves.
- The third flower is dark purple with light green leaves.

2. **Bottom Row:**
- The first flower is light blue with light green leaves.
- The second flower is medium blue with light green leaves.
- The third flower is dark blue with light green leaves.

This progression demonstrates how hydrangea flowers can change color based on soil pH levels, with more acidic soils producing blue flowers and more alkaline soils resulting in pink flowers.

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