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?
- 0%
- 25%
- 50% (correct)
- 100%
What chromosomal configuration determines the male gender?
What chromosomal configuration determines the male gender?
- YY
- XY (correct)
- XX
- XO
Which of the following is classified as a recessive disorder?
Which of the following is classified as a recessive disorder?
- Cystic fibrosis (correct)
- Hemophilia
- Huntington disease
- Color blindness
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?
What kind of disorders does the category 'dominant' include?
What kind of disorders does the category 'dominant' include?
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?
How many X chromosomes do female organisms possess?
How many X chromosomes do female organisms possess?
Which disorder is NOT considered sex-linked?
Which disorder is NOT considered sex-linked?
What does a Punnett Square demonstrate in genetic studies?
What does a Punnett Square demonstrate in genetic studies?
Which of the following statements is true regarding sex-linked genetics?
Which of the following statements is true regarding sex-linked genetics?
What genotype is described as having two identical alleles for a trait?
What genotype is described as having two identical alleles for a trait?
Which of the following best describes polygenic traits?
Which of the following best describes polygenic traits?
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?
What is the main consequence of nondisjunction during meiosis?
What is the main consequence of nondisjunction during meiosis?
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?
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?
In a pedigree chart, what does a filled circle represent?
In a pedigree chart, what does a filled circle represent?
What best describes codominant alleles?
What best describes codominant alleles?
Which term defines the likelihood of a particular outcome occurring?
Which term defines the likelihood of a particular outcome occurring?
Which process does Gregor Mendel's law of segregation describe?
Which process does Gregor Mendel's law of segregation describe?
Flashcards
Alleles
Alleles
Different forms of a gene
Heterozygous
Heterozygous
Two different alleles for a trait.
Homozygous
Homozygous
Two identical alleles for a trait.
Incomplete dominance
Incomplete dominance
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Codominant alleles
Codominant alleles
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Polygenic traits
Polygenic traits
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Diploid (2N)
Diploid (2N)
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Haploid (N)
Haploid (N)
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Dominant allele
Dominant allele
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Recessive allele
Recessive allele
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Punnett Square
Punnett Square
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Pedigree
Pedigree
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Probability of tails
Probability of tails
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Mendel's contribution
Mendel's contribution
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Mendel's principles apply to
Mendel's principles apply to
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Female chromosomes
Female chromosomes
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Male chromosomes
Male chromosomes
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Recessive disorder example
Recessive disorder example
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Dominant disorder example
Dominant disorder example
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Sex-linked disorder example
Sex-linked disorder example
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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.
