Understanding Biology

Kenneth A. Mason, Tod Duncan, George B. Johnson

Chapter 19 Genes Within Populations - all with Video Answers

Educators

Section 1

Natural Populations Exhibit Genetic Variation

01:08

Problem 1

Charles Darwin
a. was the first to propose a theory of evolution.
b. was the first to propose that evolution has occurred.
c. was the first to propose that evolution occurs by natural selection.
d. was the first to propose that evolution occurs via inheritance of acquired characteristics.

Joanna Quigley

Numerade Educator

01:29

Problem 2

Genetic variation
a. is created by natural selection.
b. must be present for natural selection to act.
c. is lower in sexually reproducing organisms than in asexually producing organisms.
d. is lower in organisms that have many heterozygous loci than in organisms with few heterozygous loci.

Joanna Quigley

Numerade Educator