Multiple Choice
Which of the following bind(s) to DNA enhancer regions?
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3. Extensions to Mendelian Inheritance
Overview of interacting Genes
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Join thousands of students who trust us to help them ace their exams!Watch the first videoMultiple Choice
Which of the following best describes quantitative traits in genetics?
A
They are influenced by multiple genes and show continuous variation in a population.
B
They are controlled by a single gene and exhibit discrete phenotypes.
C
They always follow simple Mendelian inheritance patterns.
D
They are only affected by environmental factors and not by genes.
Verified step by step guidance1
Understand the definition of quantitative traits: These are traits that show a range of phenotypes rather than distinct categories.
Recognize that quantitative traits are typically influenced by multiple genes, a concept known as polygenic inheritance.
Note that because multiple genes contribute, the phenotypes of quantitative traits show continuous variation, such as height or skin color.
Contrast this with traits controlled by a single gene, which usually show discrete phenotypes and follow Mendelian inheritance patterns.
Remember that while environment can influence quantitative traits, they are not solely affected by environmental factors; genes play a significant role.
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