Lecture 15 Quiz_ BIOL-1010-003 2.pdf

Lecture 15 Quiz_ BIOL-1010-003 2.pdf - Lecture 15 Quiz...

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Unformatted text preview: 9/10/2014 Lecture 15 Quiz: BIOL-1010-003 Lecture 15 Quiz Due Aug 12 at 11:59pm Points 10 Attempt History Questions 10 Available Aug 1 at 12am ­ Aug 12 at 11:59pm 12 days Time Limit 30 Minutes Attempt Time Score LATEST Attempt 1 17 minutes 9 out of 10 Score for this quiz: 9 out of 10 Submitted Aug 7 at 11:40am This attempt took 17 minutes. Question 1 1 / 1 pts Using the following information, choose the answer that describes the genotype of the parents regarding sickle cell anemia. None of the children have sickle cell anemia but they are all carriers. one parent is heterozygous and the other is homozygous recessive Correct! one parent is homozygous dominant and the other is homozygous recessive both parents are heterozygous both parents are homozygous recessive one parent is heterozygous and the other is homozygous dominant Question 2 1 / 1 pts What are the chances that from a cross between a man with cystic fibrosis and a normal woman with no cystic fibrosis, that the children will carry at least one recessive gene? 50% not enough information to calculate 0% 25% Correct! 100% Question 3 1 / 1 pts George has blood type A and Emily has blood type O. The parents of George both had blood type AB. What is the probability that George and Emily will have a child with blood type A? 25% Correct! 100% 0% 1/4 9/10/2014 Lecture 15 Quiz: BIOL-1010-003 50% cannot be determined Question 4 1 / 1 pts Nucleic acid sequence variations at the same gene loci on homologous chromosomes are referred to as Correct! Alleles Chromatids Nucleosomes Nucleotides Chromatins Question 5 1 / 1 pts A child has blood type A. The mother has blood type A and the father has blood type O. Which of the statements MUST be true? Correct! The child's genotype is IAi The mother and father cannot be the biological parents of the child The father cannot be the biological father of the child The mother's genotype is IAi, while the father's genotype is ii The mother's genotype is IAIA, while the father's genotype is ii Question 6 0 / 1 pts A colorblind man marries a normal (non­colorblind) woman. Which of the following is true of their children? Correct Answer Not enough information to determine possible outcomes. All daughters will be carriers and all sons will be colorblind. All daughters will be homozygous and all sons will be colorblind. All children will be colorblind. You Answered All daughters will be carriers and all sons will be normal. Question 7 1 / 1 pts The Law of Segregation states that in an organism with the genotype "Aa", 2/4 9/10/2014 Lecture 15 Quiz: BIOL-1010-003 all the gametes will have gene "A". 1/4 of the gametes will have "A" and 3/4 will have "a". all the gametes will have gene "a". Correct! half the gametes will have "A" and half will have "a". 3/4 of the gametes will have "A" and 1/4 will have "a". Question 8 1 / 1 pts Which of the following terms explains how other genes can mimic the phenotype (blood type O) even though the child does not have the genotype (ii) associated with that phenotype? Codominance Pleiotropy Incomplete Dominance Correct! Epistasis Polygenic inheritance Question 9 1 / 1 pts In snapdragon flowers, red flowers mated with white flowers produce pink. What proportions of red flowers are expected from the crossing of two pink snapdragon flowers? 100% 50% 0% 75% Correct! 25% Question 10 1 / 1 pts In a cross between two parents, both with the genotype "Aa", what is the ratio of genotypes in the offspring? 50% homozygous dominant: 25% homozygous recessive: 25% heterozygous 100% recessive 50% homozygous dominant: 50% homozygous recessive Correct! 25% homozygous dominant: 25% homozygous recessive: 50% heterozygous 100% dominant 3/4 9/10/2014 Lecture 15 Quiz: BIOL-1010-003 Quiz Score: 9 out of 10 4/4 ...
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