Question 12 1 out of 1 points If a homozygous black bull is mated with a

Question 12 1 out of 1 points if a homozygous black

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Question 12 1 out of 1 points If a homozygous black bull is mated with a homozygous white cow and the calf is gray, this would be an example of ___________. However, if the calf has black and white spots this would be an example of _______________. Answer Selected Answer: incomplete dominance; codominance Correct Answer: incomplete dominance; codominance Response Feedback: With incomplete dominance, there are 3 phenotypes and the heterozygote phenotype is intermediate between the two homozygous phenotypes. With codominance, both alleles are expressed in the heterozygote. Question 13 1 out of 1 points Vitamin-D resistant rickets is a sex-linked dominant trait which leads to softening of the bones which can cause fractures and deformities. Rickets is often due to a deficiency of vitamin D, however, with vitamin-D resistant rickets, ingestion of vitamin D is ineffective. Maria's mother is normal and does not display any symptoms of this disease; however, Maria's father has the disease. Maria marries a man that does not have the disease. What is the probability that they will have a son that has the disease? Answer Selected Answer: 50% Correct Answer: 50% Response Feedback: Maria must be heterozygous for the trait because her mother did not have the disease. Thus, there is a 50% that any of her sons will have the disease. Question 14
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1 out of 1 points A heterozygote for a trait exhibiting incomplete dominance will Answer Selected Answer: exhibit an intermediate phenotype. Correct Answer: exhibit an intermediate phenotype. Response Feedback: With incomplete dominance, there are 3 phenotypes and the heterozygote phenotype is intermediate between the two homozygous phenotypes. Question 15 0 out of 1 points tRNAs carrying the correct amino acid recognize the proper codons on the mRNA because Answer Selected Answer: the anticodon of the tRNA carries the correct amino acid. Correct Answer: the anticodon of the tRNA hydrogen binds to the codon of the mRNA by complementary base pairing. Response Feedback: The anticodon of the tRNA binds to the codon of the mRNA by complementary base pairing. The tRNA carries the encoded amino acid. Question 16 1 out of 1 points Which of the following sequences of events in the production of recombinant DNA are in the correct order? Answer Selected Answer: cut DNA with restriction enzymes, mix DNA with plasmid DNA, add DNA ligase Correct Answer: cut DNA with restriction enzymes, mix DNA with plasmid DNA, add
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DNA ligase Response Feedback: In order to make recombinant DNA, it is necessary to cut the DNA with a restriction enzyme before mixing it with plasmid DNA, which has been cut with the same restriction enzyme. Then, DNA ligase is added to link the DNA strands. Question 17 0 out of 1 points A transposon may cause a mutation if it Answer Selected Answer: jumps into an intergenic DNA sequence.
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  • Spring '17
  • Betty Herring
  • Biology, DNA, Correct Answer

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