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Flashcards on Genetics: Punnett Squares
Click on the flashcard to see the answer
What is a Punnett square used for?
Predicting the possible genetic outcomes of a cross
What are the symbols used in a Punnett square to represent alleles?
Letters
What is the purpose of crossing two organisms in a Punnett square?
To simulate the genetic inheritance from each parent
What is the genotypic ratio for a monohybrid cross between two heterozygous individuals?
1:2:1
What is the phenotypic ratio for a monohybrid cross between two heterozygous individuals?
3:1
What does a Punnett square show?
Possible genetic combinations in offspring
What is the purpose of using a Punnett square in genetic studies?
To determine expected ratios of genotypes and phenotypes
What is the Punnett square used to predict?
The probability of traits in offspring
What is the genotype of an individual with two recessive alleles?
Homozygous recessive
What is the expected ratio of genotypes for a monohybrid cross between two heterozygotes?
1:2:1
What is the expected phenotypic ratio for a dihybrid cross between two heterozygotes?
9:3:3:1
What is the expected phenotypic ratio for a monohybrid cross between two heterozygotes?
3:1
What does a Punnett square represent?
Possible combinations of alleles in offspring
What is the purpose of a Punnett square?
To determine the probability of offspring inheriting certain traits
What is the genotypic ratio for a dihybrid cross between two heterozygous individuals?
9:3:3:1
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Test Your Knowledge
What is a Punnett square used for?
Predicting genetic outcomes
Graphing scientific data
Solving mathematical equations
Analyzing chemical reactions
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What does a Punnett square represent?
Electron configurations
Physical features
Possible combinations of alleles
Chemical reactions
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What are Punnett squares used to determine?
Population sizes
Expected ratios of genotypes and phenotypes
Planetary orbits
Historical events
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What is the genotypic ratio for a monohybrid cross between two heterozygous individuals?
2:1
1:2:1
1:1
3:1
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What is the phenotypic ratio for a monohybrid cross between two heterozygous individuals?
1:2:1
3:1
1:1
2:1
Check Answers
What is the expected phenotypic ratio for a dihybrid cross between two heterozygotes?
1:2:1
3:1
2:1
9:3:3:1
Check Answers
What is the expected phenotypic ratio for a monohybrid cross between two heterozygotes?
3:1
1:2:1
1:1
2:1
Check Answers
What does a Punnett square show?
Possible genetic combinations in offspring
Physical characteristics of organisms
Chemical reactions in cells
Graphs of scientific data
Check Answers
What is the purpose of using a Punnett square in genetic studies?
To determine expected ratios of genotypes and phenotypes
To analyze historical events
To study chemical reactions
To calculate mathematical equations
Check Answers
What is the genotype of an individual with two recessive alleles?
Homozygous recessive
Homozygous dominant
Heterozygous
Hemizygous
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