BS L8

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Questions and Answers

Which process creates genetic diversity through crossing over and independent assortment?

  • Mitosis
  • Replication
  • Fertilization
  • Meiosis (correct)

What is the principle that states that genes for different traits are inherited independently of each other?

  • Law of Independent Assortment (correct)
  • Law of Dominance
  • Law of Segregation
  • Law of Homologous Recombination

What rule predicts the combined probabilities of independent events?

  • Law of Independent Assortment
  • Law of Segregation
  • Sum Rule
  • Product Rule (correct)

What can be used to predict the probability of offspring inheriting certain traits?

<p>Punnett squares (B)</p> Signup and view all the answers

Which rule is used to calculate the probability of two independent events occurring together?

<p>The Product Rule (B)</p> Signup and view all the answers

What is the probability of inheriting an affected allele from both parents, if there is a one-half chance of inheriting an affected allele from mom and a one-half chance of inheriting an affected allele from dad?

<p>One-quarter (A)</p> Signup and view all the answers

What is the probability of the child being affected and female, if the probability of being affected is one-quarter and the probability of being female is one-quarter?

<p>One-eighth (C)</p> Signup and view all the answers

What rule is used to calculate the probability of either one of two mutually exclusive events occurring?

<p>The Sum Rule (A)</p> Signup and view all the answers

Which of the following describes the law of independent assortment?

<p>Genes are not linked and assort independently (A)</p> Signup and view all the answers

What is the phenotypic ratio in a dihybrid cross if the genes are not linked?

<p>9:3:3:1 (C)</p> Signup and view all the answers

What does the principle of segregation explain in monohybrid crosses?

<p>The 1:2:1 genotypic ratio (A)</p> Signup and view all the answers

What is the purpose of using pure breeding parents in creating hybrids for monohybrid and dihybrid crosses?

<p>To pass on only one type of gamete for the genes being studied (C)</p> Signup and view all the answers

Which of Mendel's principles states that the inheritance of one gene does not affect the inheritance of another gene?

<p>Law of Independent Assortment (D)</p> Signup and view all the answers

What is the purpose of a test cross in genetics?

<p>To determine the genotype of an individual with a dominant phenotype (D)</p> Signup and view all the answers

What is the law of segregation in genetics?

<p>An individual's two alleles for a gene separate during gamete formation (B)</p> Signup and view all the answers

What is the purpose of a monohybrid cross in genetics?

<p>To determine the phenotype of an individual with an unknown genotype (A)</p> Signup and view all the answers

Which organism is commonly used as a model organism to study genetic principles?

<p>Drosophila melanogaster (A)</p> Signup and view all the answers

What is the purpose of a test cross in genetics?

<p>To determine the genotype of an individual with a dominant phenotype (A)</p> Signup and view all the answers

What is the genotypic ratio in a monohybrid cross with complete dominance?

<p>1:2:1 (D)</p> Signup and view all the answers

What is the purpose of Punnett squares in genetics?

<p>To predict genotypes and phenotypes of offspring (C)</p> Signup and view all the answers

Which principle of Mendelian genetics states that during meiosis, alleles are randomly segregated into gametes?

<p>Principle of Segregation (B)</p> Signup and view all the answers

What is the purpose of a test cross in genetics?

<p>To determine the genotype of an individual with a dominant phenotype (C)</p> Signup and view all the answers

What is the phenotypic ratio expected in a dihybrid cross between two double heterozygotes, according to the law of independent assortment?

<p>9:3:3:1 (A)</p> Signup and view all the answers

What happens to the phenotypic ratios in a dihybrid cross if the genes are linked?

<p>The ratios may vary from 9:3:3:1 (A)</p> Signup and view all the answers

Which tool is used to predict the possible outcomes of a dihybrid cross?

<p>The Punnett square (A)</p> Signup and view all the answers

What is the expected phenotypic ratio for a dihybrid cross?

<p>9:3:3:1 (A)</p> Signup and view all the answers

What rule can be used to calculate the probability of two independent events occurring together?

<p>The product rule (B)</p> Signup and view all the answers

What rule can be used to calculate the probability of two mutually exclusive events occurring?

<p>The sum rule (B)</p> Signup and view all the answers

What is an example of independent events?

<p>Coin toss (A)</p> Signup and view all the answers

What is the probability of producing a child that is homozygous recessive if both parents have a heterozygous genotype?

<p>One quarter (A)</p> Signup and view all the answers

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