An individual who is homozygous ________.
A) expresses the dominant trait
B) carries two different alleles for a gene
C) carries two copies of the same allele for a gene
D) expresses the recessive trait
C) carries two copies of the same allele for a gene
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If you were having IVF, what would you choose to do with surplus embryos?
1.donate them to another couple 2.discard them 3.donate them to researchers for stem cell research 4.store them indefinitely
Which of the following best represents the flow of the scientific method?
A) question, hypothesis, hypothesis testing, observation, predictions B) predictions, question, observation, hypothesis, hypothesis testing C) observation, hypothesis, hypothesis testing, question, predictions D) observation, question, hypothesis, predictions, hypothesis testing
For a mutation to affect the evolution of an animal species, it must occur within
A) somatic cells. B) diploid cells. C) prokaryotic cells. D) gametes.
Which of the following statements accurately describes why Taq polymerase is used in PCR?
A. It has regions that are complementary to the primers. B. It is heat stable and can withstand the heating step of PCR. C. It binds more readily than other polymerases to the primers. D. Only minute amounts are needed for each cycle of PCR.