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#Question id: 3750


Which of the following facts did Hershey and Chase make use of in trying to determine whether DNA or protein is the genetic material?

#Section 3: Genetics, Cellular and Molecular Biology
  1. DNA contains sulfur, whereas protein does not.

  2. DNA contains phosphorus, whereas protein does not.

  3. DNA contains nitrogen, whereas protein does not.

  4. DNA contains purines, whereas protein includes pyrimidines.

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#Question id: 3560

#Section 3: Genetics, Cellular and Molecular Biology

During which phase of meiosis does the segregation described by Mendel primarily occur?

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#Question id: 3561

#Section 3: Genetics, Cellular and Molecular Biology

During which phase of meiosis does independent assortment occur?

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#Question id: 3562

#Section 3: Genetics, Cellular and Molecular Biology

In cats, blood-type A results from an allele (IA) that is dominant over an allele (iB) that produces blood-type B. There is no O blood type. Two heterozygous was intercross. What is the probability of first offspring blood-type B?

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#Question id: 3563

#Section 3: Genetics, Cellular and Molecular Biology

Independent assortment is based on the random separation of homologous pairs of chromosomes in anaphase I of meiosis; it takes place when genes encoding two characters are located

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#Question id: 3564

#Section 2: General Biology

Population locus with four alleles. How many genotypes are present in the population?

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#Question id: 3565

#Section 3: Genetics, Cellular and Molecular Biology

Mendel crossed yellow-seeded and green-seeded pea plants and then allowed the offspring to self-pollinate to produce an F2 generation. The results were as follows: 6,022 yellow and 2,001 green. Which of the following statements correctly describes the relationship of the allele for green seeds to the allele for yellow seeds?