Podcast
Questions and Answers
What is the probability that a flipped coin will land on heads?
What is the probability that a flipped coin will land on heads?
What chromosomal configuration determines the male gender?
What chromosomal configuration determines the male gender?
Which of the following is classified as a recessive disorder?
Which of the following is classified as a recessive disorder?
Gregor Mendel's principles of genetics primarily apply to which of the following?
Gregor Mendel's principles of genetics primarily apply to which of the following?
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What kind of disorders does the category 'dominant' include?
What kind of disorders does the category 'dominant' include?
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Which type of Punnett Square is used to analyze traits across three generations?
Which type of Punnett Square is used to analyze traits across three generations?
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How many X chromosomes do female organisms possess?
How many X chromosomes do female organisms possess?
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Which disorder is NOT considered sex-linked?
Which disorder is NOT considered sex-linked?
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What does a Punnett Square demonstrate in genetic studies?
What does a Punnett Square demonstrate in genetic studies?
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Which of the following statements is true regarding sex-linked genetics?
Which of the following statements is true regarding sex-linked genetics?
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What genotype is described as having two identical alleles for a trait?
What genotype is described as having two identical alleles for a trait?
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Which of the following best describes polygenic traits?
Which of the following best describes polygenic traits?
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Which process results in an organism having only one allele for each gene?
Which process results in an organism having only one allele for each gene?
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What is the main consequence of nondisjunction during meiosis?
What is the main consequence of nondisjunction during meiosis?
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Which term describes genes located on the same chromosome that tend to be inherited together?
Which term describes genes located on the same chromosome that tend to be inherited together?
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Which phrase describes the inheritance pattern of a trait where the heterozygous phenotype is an intermediate blend?
Which phrase describes the inheritance pattern of a trait where the heterozygous phenotype is an intermediate blend?
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In a pedigree chart, what does a filled circle represent?
In a pedigree chart, what does a filled circle represent?
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What best describes codominant alleles?
What best describes codominant alleles?
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Which term defines the likelihood of a particular outcome occurring?
Which term defines the likelihood of a particular outcome occurring?
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Which process does Gregor Mendel's law of segregation describe?
Which process does Gregor Mendel's law of segregation describe?
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Study Notes
Alleles
- Alleles are different forms of a gene
- Heterozygous - an organism that has two different alleles for a particular trait
- Homozygous - an organism that has two identical alleles for a particular trait
Gregor Mendel
- Independent assortment of chromosomes
- Incomplete dominance - heterozygous phenotype is between the two homozygous phenotypes
- Allele - alternate forms of a gene
Polygenic Traits
- Polygenic traits - one gene impacts a characteristic (ex: human skin color)
Codominant Alleles
- Codominant alleles - both alleles are expressed in heterozygous individuals (ex: human type AB blood)
Diploid/Haploid
- Diploid - a cell or organism that has two sets of chromosomes
- Haploid - a cell or organism that has one set of chromosomes (ex: human egg or sperm N=23)
Linked Genes
- Linked genes - ones same chromosome crossing over
- Gene maps - based on frequency of crossing over, more of ten they cross over together the closer they are on the chromosome
- Probability - likelihood of an outcome
- Ex: 50:50 chance of flipping heads or tails
Sex-linked Genes
- Sex-linked genes - a gene located on a sex chromosome (x or y)
- Pedigrees - a family tree on genetic traits
- (○ is female □is male)
Dominant/Recessive Alleles
- Dominant allele - expressed when heterozygous or homozygous dominant
- Recessive allele - only expressed when homozygous recessive
- Non-disjunction - failure of chromosomes to separate during meiosis
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Description
Test your understanding of alleles, including concepts like heterozygous and homozygous traits. Explore Gregor Mendel's principles of inheritance and the impact of polygenic traits. This quiz also covers diploid/haploid classifications and linked genes.
