Polygenic Inheritance

Flashcard
•
Biology
•
12th Grade
•
Hard
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15 questions
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1.
FLASHCARD QUESTION
Front
What is polygenic inheritance?
Back
Polygenic inheritance is a type of genetic inheritance where multiple genes contribute to the expression of a single trait, resulting in a continuous range of phenotypes.
2.
FLASHCARD QUESTION
Front
What is the genotype of an individual with a recessive disorder in a pedigree?
Back
The genotype must be 'hh' for the individual to express the recessive disorder.
3.
FLASHCARD QUESTION
Front
What are polygenic traits?
Back
Polygenic traits are characteristics that are influenced by multiple genes, leading to a range of phenotypes, such as height or skin color.
4.
FLASHCARD QUESTION
Front
How do multiple genes affect traits in polygenic inheritance?
Back
Multiple genes contribute to the expression of a trait, each adding to the overall phenotype.
5.
FLASHCARD QUESTION
Front
What are the limitations of studying polygenic inheritance?
Back
Limitations include difficulty in identifying all contributing genes, the influence of environmental factors, and challenges in distinguishing genetic effects from environmental effects.
6.
FLASHCARD QUESTION
Front
What factors can explain variation in human height?
Back
Variation in height can be explained by polygenic inheritance and environmental factors such as nutrition.
7.
FLASHCARD QUESTION
Front
What is the difference between codominance and polygenic inheritance?
Back
Codominance involves the expression of both alleles in a heterozygote, while polygenic inheritance involves multiple genes affecting a single trait.
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