Questions and Answers
What is a version of a gene called?
allele
If the gene for blue eyes is named E, what is the genotype of a blue-eyed person?
ee
Describe the relationships among genes, DNA, and traits.
Traits are determined by genes, which are composed of DNA.
What are the chances of having offspring with short tails if a long-tailed mouse that is heterozygous mates with a short-tailed mouse?
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What is meant by a phenotype ratio in a Punnett square?
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Study Notes
Genetic Research Overview
- An allele is a variant of a gene that can manifest in different forms, influencing traits.
- Blue eye color is determined by a recessive allele, designated as "e," requiring a homozygous genotype (ee) for expression.
Genes and Traits
- Traits are influenced by genes, which are segments of DNA responsible for hereditary characteristics.
- Genes are made up of specific sequences of DNA, providing the blueprint for various traits.
Genetic Probability in Offspring
- In a mating scenario involving a heterozygous long-tailed mouse (dominant allele) and a homozygous short-tailed mouse (recessive allele), there is a 50% chance that the offspring will exhibit the short-tailed phenotype.
Punnett Square Analysis
- The phenotype ratio in a Punnett square reflects the proportion of possible offspring displaying a particular trait, enabling prediction of inherited characteristics.
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Description
Test your knowledge on genetics with these quick check flashcards. Learn important terms like allele and genotype, and understand the relationships between genes, DNA, and traits. Ideal for students studying genetic research or related fields.
