Genetics and Probability Basics

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Questions and Answers

What is the probability of flipping all heads if a coin is flipped three times in a row?

  • 1/8 (correct)
  • 1/2
  • 3/4
  • 1/4

What is the minimum number of copies of a dominant allele needed to display the dominant trait?

  • 4
  • 2
  • 3
  • 1 (correct)

What is the term for different forms of a gene?

  • Phenotype
  • Allele (correct)
  • Genotype
  • Trait

What is the purpose of a Punnett square?

<p>To represent the possible gene combinations resulting from a genetic cross (A)</p> Signup and view all the answers

What is the dominant allele represented with?

<p>Uppercase letter (B)</p> Signup and view all the answers

What did Mendel use to determine that inheritance is based on genes?

<p>Experiments (C)</p> Signup and view all the answers

What is the purpose of a test cross?

<p>To identify the genotype of an organism with a dominant phenotype (B)</p> Signup and view all the answers

What is the genotypic ratio of a monohybrid cross?

<p>1:4:2:1 (D)</p> Signup and view all the answers

What is the phenotype of an organism with the genotype TT?

<p>Dominant (D)</p> Signup and view all the answers

What is the probability that a plant will have a dominant trait in a monohybrid cross?

<p>66.7% (C)</p> Signup and view all the answers

What is the purpose of a Punnett square?

<p>To predict the outcome of a monohybrid cross (B)</p> Signup and view all the answers

What is the relationship between the segregation of one pair of alleles and the segregation of another pair of alleles?

<p>They are independent (C)</p> Signup and view all the answers

What is the phenotypic ratio of a dihybrid cross?

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

What is the principle that states genes for different traits can segregate independently during gamete formation?

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

What type of alleles have a blended phenotype when heterozygous?

<p>Incomplete dominant (D)</p> Signup and view all the answers

What is the genotype ratio of a dihybrid cross?

<p>1:2:2:1:4:1:2:2:1 (A)</p> Signup and view all the answers

What determines the inheritance of biological characteristics?

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

What is the result of crossing homozygous red flowers with homozygous white flowers?

<p>Heterozygous pink flowers (A)</p> Signup and view all the answers

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