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Questions and Answers
Which of the following best describes a Punnett square?
Which of the following best describes a Punnett square?
- A tool used to predict the probability of offspring inheriting certain traits from their parents (correct)
- A tool used to analyze DNA sequences
- A tool used to measure the size of chromosomes
- A tool used to study the structure of genes
What is the difference between dominant and recessive traits?
What is the difference between dominant and recessive traits?
- Dominant traits are only expressed if an individual has two copies of the dominant allele, while recessive traits are always expressed
- Dominant traits are always expressed in females, while recessive traits are always expressed in males
- Dominant traits are only expressed in males, while recessive traits are only expressed in females
- Dominant traits are always expressed, while recessive traits are only expressed if an individual has two copies of the recessive allele (correct)
What is a chromosome?
What is a chromosome?
- A structure in the nucleus of a cell that contains genetic material (correct)
- A type of allele that is always dominant
- A tool used to visualize DNA sequences
- A type of trait that is always expressed
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Study Notes
Genetics Basics
- A Punnett square is a graphical representation of the possible genotypes of offspring from a cross between two parents, used to predict the probability of different traits being expressed.
Traits and Inheritance
- A dominant trait is one that will be expressed if an individual has one copy of the dominant allele, even if they also have a recessive allele.
- A recessive trait is one that will only be expressed if an individual has two copies of the recessive allele.
Chromosomes and DNA
- A chromosome is a thread-like structure made up of DNA and proteins that carries genetic information in the nucleus of living cells.
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