BIOLOGY: HOW LIFE WORKS (LOOSE-LEAF)
3rd Edition
ISBN: 9781319449568
Author: Morris
Publisher: MAC HIGHER
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Chapter 17.1, Problem 1SAQ
Summary Introduction
The Genetic traits of humans are mostly classified by either complex or monogenic. Complex traits from a grouping of environmental factors such as choices of lifestyle about exercise and diet. Measurable
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what are factors that control traits are called?
Explain why some complex traits are also called quantitative traits, and give at least one example.
Not all traits are controlled by dominant and recessive alleles. What does incomplete dominance mean? Give an example.
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BIOLOGY: HOW LIFE WORKS (LOOSE-LEAF)
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- The majority of traits are what? (gene number)arrow_forwardWhat are two of the same alleles for a trait?arrow_forwardHow does heritability differ between major trait categories such as morphology, life history, behavior, and physiology? Which trait types are generally most heritable and which are least heritable?arrow_forward
- Explain the difference between a continuous trait and a discontinuous trait. Give two examples of each. Are quantitative traits likely to be continuous or discontinuous? Explain why.arrow_forwardWhat are Sex-influenced traits?arrow_forwardWhat characteristics do you expect to see in a trait that exhibits anticipation?arrow_forward
- Aren’t traits such as earlobe shape and dimples due to dominant and recessive alleles?arrow_forwardAccording to Amar J. S. Klar, is there a such thing as “left handedness”? What is the preferred term? Describe how the genetics works, according to his hypothesis. What are the alleles, and which combinations of alleles make for which type of hand use?arrow_forwardWhat is a Sex-Linked Trait? Why are they noted differently than other alleles when completing aPunnett Square?arrow_forward
- Are dominant traits always more common than recessive traits? Why or why not?arrow_forwardWhat is a dimorphism? A trait with two distinct forms originating from the interaction of two alleles of a single gene A trait with three or more distinct forms linked to multiple alleles of a single gene A trait consisting of a continuous spectrum of forms influenced by the interaction of multiple genes and multiple allelesarrow_forwardWhat do the terms genotype, phenotype, dominant, recessive, homozygous, and heterozygous mean?arrow_forward
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