Which of the following terms refers to a situation where a single phenotypic character is determined by the additive effects of two or more genes?
A) incomplete dominance
B) codominance
C) pleiotropy
D) polygenic inheritance
Answer: D
You might also like to view...
A genotyping microarray would be useful in determining if the chromosomal mutation called duplication took place
A. true B. false
Heritability is measured as:
A. the slope of the line that relates the average phenotype of parents to the average phenotype of their offspring. B. the slope of the line that relates the average phenotype of parents to the average environment in which they live. C. the slope of the line that relates individual phenotype to environmental conditions. D. the degree of skewness of the distribution of offspring phenotypes. E. the difference between the norms of reaction of two phenotypes across the same range of environmental conditions.
Exposure to a light source
a. decreases melatonin levels. b. increase melatonin levels. c. decrease testosterone levels. d. is used to treat SAD and jet lag. e. does more than one of these
The population of American bison used to number in the millions. Hunting and other problems greatly decreased the number of bison to about 1,000. Today, the numbers are recovering to estimates of more than 200,000 bison. This crash in the population of bison and recent recovery is an example of ______
A. gene flow B. genetic drift C. the bottleneck effect D. the founder effect