Genetics

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1. What are codominant alleles?

  • Alleles that are different.
  • Alleles that are the same.
  • Pairs of alleles that both affect the phenotype when present in a heterozygote.
  • Pair of alleles that do not affect the phenotype when present in a heterosygote.
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2. What are the blood groups?

  • A, B, O, AB, AO, BO
  • A, B, O, AB
  • A, B, C, AB
  • A, B, AB

3. What does it mean when a disease is sex-linked?

  • It is a disease that can only be recessive.
  • It is a disease that can only be found on the X chromosome.
  • where a gene is located on the sex chromosome.
  • It is a disease that can only be found on the Y chromosome.

4. What is a carrier?

  • A carrier is someone who carries the disease but doesn't exhibit symptoms of the disease
  • A person who carries a disease and exhibits symptoms.
  • A person who carries a genotype.
  • A person who carries a phenotype.

5. What does heterozygous mean?

  • Two different locus are the same.
  • Two different locus on one chromosome
  • Having two different alleles of the same gene.
  • Having two of the same alleles of the same gene.
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