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Genes & Alleles quiz #5

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이 집합의 용어 (31)

  • What is a gene family?
    A group of related genes that have similar sequences and often similar functions.
  • What controls traits in organisms?
    Genes control traits by encoding proteins.
  • What do pleiotropic alleles do?
    Pleiotropic alleles influence multiple traits.
  • What is an allele?
    An allele is a variant form of a gene.
  • Which genotypes are homozygous?
    AA and aa, where both alleles are identical.
  • What is a false statement about the influence of genes on health?
    Genes do not influence health (this statement is not true as genes do influence health).
  • What is the difference between dominant and recessive alleles?
    Dominant alleles express their trait with one copy, while recessive alleles require two copies.
  • What is the relationship between an allele and a gene?
    An allele is a variant form of a gene.
  • How do multiple alleles influence phenotype?
    Different combinations of alleles can produce a variety of phenotypic expressions.
  • What is a recessive allele represented by?
    A lowercase letter.
  • How is the structure of chromosomes related to inheritance?
    Chromosomes carry genes that are passed from parents to offspring.
  • What is genetics the study of?
    Genetics is the study of genes, heredity, and variation in organisms.
  • Which phrase correctly defines a gene?
    A segment of DNA that encodes a specific protein.
  • When do alleles for two different genes—located in two different chromosomes—segregate?
    During meiosis.
  • What are alleles?
    Alleles are different versions of the same gene.
  • What is the definition of a gene?
    A gene is a segment of DNA that encodes a specific protein.
  • Which traits are considered inheritable?
    Traits like eye color, hair color, and blood type.
  • What is a recessive trait?
    A trait that is only expressed when two recessive alleles are present.
  • Which characteristic is a trait that can be inherited? Explain your answer.
    Eye color is an inheritable trait because it is determined by genes passed from parents to offspring.
  • What is the best description of a gene?
    A segment of DNA that encodes a specific protein.
  • What is heterozygous?
    Having two different alleles for a specific trait.
  • What is a gene and what does it encode?
    A gene is a segment of DNA that encodes a specific protein, which influences a particular trait.
  • How are dominant and recessive alleles typically represented?
    Dominant alleles are represented by capital letters, while recessive alleles are represented by lowercase letters.
  • What does it mean for a cell to be haploid?
    A haploid cell has one copy of each chromosome or gene, symbolized as n.
  • How does the number of chromosome sets differ between haploid and diploid cells?
    Haploid cells have one set of chromosomes, while diploid cells have two sets.
  • How do alleles influence traits such as eye color?
    Different alleles of a gene can code for different versions of a trait, such as blue or brown eyes.
  • How are alleles inherited in diploid organisms?
    In diploid organisms, one allele for each gene is inherited from each parent, resulting in two alleles per gene.
  • How does meiosis relate to the distribution of alleles?
    Meiosis is the process that distributes alleles into gametes, ensuring offspring inherit a mix of alleles from both parents.
  • How can you distinguish between haploid and diploid cells based on chromosome number?
    Haploid cells have one copy of each chromosome, while diploid cells have two copies of each chromosome.
  • What is the functional consequence of having different alleles for the same gene?
    Having different alleles for the same gene can result in different versions of a trait being expressed.
  • What is the importance of understanding haploid and diploid states in the study of genetics?
    Understanding haploid and diploid states is crucial for studying inheritance patterns and processes like meiosis.