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Genotype and Phenotype

This quiz is designed to assess your understanding of the concepts related to genotype and phenotype in genetics.

15 Questions Published
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Questions

Question 1 Multiple Choice (Single Answer)

What is the term used to describe the genetic makeup of an organism?

  1. Genotype
  2. Phenotype
  3. Allele
  4. Locus
Question 2 Multiple Choice (Single Answer)

What is the term used to describe the observable characteristics of an organism?

  1. Genotype
  2. Phenotype
  3. Allele
  4. Locus
Question 3 Multiple Choice (Single Answer)

What is the relationship between genotype and phenotype?

  1. Genotype determines phenotype
  2. Phenotype determines genotype
  3. They are independent of each other
  4. They are always the same
Question 4 Multiple Choice (Single Answer)

What is an allele?

  1. A gene
  2. A protein
  3. A chromosome
  4. A variation of a gene
Question 5 Multiple Choice (Single Answer)

How many alleles can an organism have for a given gene?

  1. One
  2. Two
  3. Three
  4. Four
Question 6 Multiple Choice (Single Answer)

What is a homozygous genotype?

  1. A genotype with two identical alleles
  2. A genotype with two different alleles
  3. A genotype with three alleles
  4. A genotype with four alleles
Question 7 Multiple Choice (Single Answer)

What is a heterozygous genotype?

  1. A genotype with two identical alleles
  2. A genotype with two different alleles
  3. A genotype with three alleles
  4. A genotype with four alleles
Question 8 Multiple Choice (Single Answer)

What is a dominant allele?

  1. An allele that is always expressed in the phenotype
  2. An allele that is never expressed in the phenotype
  3. An allele that is expressed only in homozygous genotypes
  4. An allele that is expressed only in heterozygous genotypes
Question 9 Multiple Choice (Single Answer)

What is a recessive allele?

  1. An allele that is always expressed in the phenotype
  2. An allele that is never expressed in the phenotype
  3. An allele that is expressed only in homozygous genotypes
  4. An allele that is expressed only in heterozygous genotypes
Question 10 Multiple Choice (Single Answer)

What is a Punnett square?

  1. A diagram used to predict the offspring of a genetic cross
  2. A diagram used to predict the genotype of an organism
  3. A diagram used to predict the phenotype of an organism
  4. A diagram used to predict the sex of an organism
Question 11 Multiple Choice (Single Answer)

What is a monohybrid cross?

  1. A cross between two organisms that differ in one gene
  2. A cross between two organisms that differ in two genes
  3. A cross between two organisms that differ in three genes
  4. A cross between two organisms that differ in four genes
Question 12 Multiple Choice (Single Answer)

What is a dihybrid cross?

  1. A cross between two organisms that differ in one gene
  2. A cross between two organisms that differ in two genes
  3. A cross between two organisms that differ in three genes
  4. A cross between two organisms that differ in four genes
Question 13 Multiple Choice (Single Answer)

What is a testcross?

  1. A cross between a homozygous dominant organism and a heterozygous organism
  2. A cross between a homozygous recessive organism and a heterozygous organism
  3. A cross between two homozygous dominant organisms
  4. A cross between two homozygous recessive organisms
Question 14 Multiple Choice (Single Answer)

What is a backcross?

  1. A cross between a heterozygous organism and a homozygous dominant organism
  2. A cross between a heterozygous organism and a homozygous recessive organism
  3. A cross between two heterozygous organisms
  4. A cross between two homozygous organisms
Question 15 Multiple Choice (Single Answer)

What is a pedigree chart?

  1. A diagram that shows the family history of a genetic trait
  2. A diagram that shows the genotype of a family
  3. A diagram that shows the phenotype of a family
  4. A diagram that shows the sex of a family
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