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Chapter 19: Q.21 (page 484)

Explain what a cline is and provide examples.

Short Answer

Expert verified

A cline is a progressive change in the character of a specific species in a population that is connected with a geographic transition.

Example- warm-blooded animals.

Step by step solution

01

Introduction

A cline is a geographic gradient or average character value that gradually increases geographic variance by a gene's frequency.

02

 Explanation

Geographic variation arises in populations of a particular species and spreads across an ecological gradient known as a cline. Warm-blooded animals, for example, have bigger bodies in cooler climes near the earth's poles, allowing them to preserve heat more effectively. This is known as a latitudinal cline. In addition, blooming plants bloom at different times on the incline of the mountain, which represents the altitudinal cline.

03

Conclusion

As a result, a cline is a progressive change in the character of a specific species in a population that is connected with a geographic transition.

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Most popular questions from this chapter

Solve for the genetic structure of a population with 12homozygous recessive individuals (yy), 8homozygous dominant individuals (YY), and 4 heterozygous individuals (Yy).

When males and females of a population look or act differently, it is referred to as ________.

a. sexual dimorphism

b. sexual selection

c. diversifying selection

d. a cline

Describe natural selection and give an example of natural selection at work in a population.

Figure 19.2In plants, violet flower color (V) is dominant over white (v). If p=.8and q=0.2in a population of 500plants, how many individuals would you expect to be homozygous dominant (VV), heterozygous (Vv), and homozygous recessive (vv)? How many plants would you expect to have violet flowers, and how many would have white flowers?

Population genetics is the study of:

a. how selective forces change the allele frequencies in a population over time

b. the genetic basis of population-wide traits

c. whether traits have a genetic basis

d. the degree of inbreeding in a population
See all solutions

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