Download BLY Complete Exam Questions Fully Answered. and more Exams Nursing in PDF only on Docsity!
BLY-101 exam 3/final
t/f: prior to antibiotics, 1/4 of annual deaths were a result of scarlet fever, tuberculosis and pneumonia - correct answer True If P is the allele for black hair and it is completely dominant when paired with the allele p for red hair, then what color hair would an offspring have if its genotype was Pp? A. Auburn B. Black C. Brown D. Gray E. Red - correct answer B. Black A Germ cell with a chromosome number of 100 will produce gametes with a chromosome number of? A. 0 B. 25 C. 50 D. 100 E. 200 - correct answer C. 50 When does crossing over occur? A. Prophase of Mitosis B. Prophase I of Meiosis C. Phophase II of Meiosis D. A and B E. B and C - correct answer B. Prophase I of Meiosis
A healthy human sperm cell contains ____ chromosomes A. 2 B. 4 C. 23 D. 46 - correct answer C. 23 If a square shape (S) is completely dominant to a round shape (s), then which of the following genotypes would demonstrate the square shape in phenotype? A. SS B. Ss C. ss D. two of the above E. Three of the above - correct answer D. two of the above ( A & B) How many of the genotypes in the list below is\are heterozygous? BB TT Bb Ff tt A. 1 B. 2 C. 3 D. 4
A. During Metaphase I, homologous pairs align themselves on the equator in an organized fashion ensuring that all maternal chromosomes are located on one side and all paternal chromosomes are located on the opposite side of the equator. B. Prophase of Mitosis involves crossing over between sister chromatids. C. Meiosis II is similar to mitosis. D. two of the above E. three of the above - correct answer C. Meiosis II is similar to mitosis. Which of the following statements regarding meiosis is true? A. A spindle will not be used B. Only one round of replication will occur. C. Only two cells will result D. Only one round of division will occur E. Two of the above statements are true statements. - correct answer B. Only one round of replication will occur. Which allele for flower color is dominant in garden pea plants? A. The allele for the production of pink flowers. B. The allele for the production of purple flowers. C. The allele for the production of red flowers. D. The allele for the production of white flowers. - correct answer B. The allele for the production of purple flowers. Predict what would happen if an environmental change occurred and caused the death of one member of an asexual reproducing population. A)it is highly probable that a few other members of the population would die B) it is highly probable that no other members of that population would die
C) it is highly probable that all members of the population will die D) it is impossible to make a prediction based on one member of the population - correct answer C) it is highly probable that all members of the population will die Different forms of the same gene are called ____________. - correct answer Alleles Crossing over occurs between _____ and during ______ A ) nonsister chromatids, mitosis B) nonsister chromatids, meiosis C) sister chromatids, mitosis D) sister chromatids, meiosis E)two of the above - correct answer B) nonsister chromatids, meiosis During which of the following phases are sister chromatids pulled apart? A. Prophase of mitosis B. Metaphase of meiosis C. Anaphase of mitosis D. Anaphase II of meiosis E. two of the above - correct answer E. two of the above ( C & D) A germ cell with 100 chromosomes will produce gametes with ___ chromosomes. - correct answer 50 The contrasting forms of the trait that Mendel examined in his pea plants were... A) white and purple flowers B) Green and white peas C) stringy and bulky stems
An albino father and a mother that is a carrier for albinism have a ____chance of having a child that is an albino. A. 25% B. 50% C. 75% D. 100% - correct answer B. 50% Two parents that have both been identified WITH Huntington's disease and are heterozygous have a ______ chance of producing an offspring that will suffer from the disease. A. 0 B. 25% C. 50% D. 75% E. 100% - correct answer D. 75% A father with Hemophilia and a carrier mother have a______chance of having a son with Hemophilia. A. 25% B. 50% C. 75% D. 100% - correct answer B. 50% How many autosomes does an individual with Down syndrome carry? A) B) 23 C) D) E )47 - correct answer E )
Which of the following genotypes best represents an individual with Klinefelter Syndrome? A. XX B. XO C. XXY D. XYY E. multiple X - correct answer C. XXY Which of the following is true regarding an amniocentesis? A. It can be done weeks earlier than a chorionic villi sampling B. It uses a fiberoptic device ' C. It raises the risk of miscarriage by 1-2 percent D. two of the above E. three of the above - correct answer C. It raises the risk of miscarriage by 1- percent crossing over: ( the figure in the middle) - correct answer Homologous pair of chromosomes in a duplicated state - correct answer sperm cells and egg cell are examples of - correct answer gametes fusion of gametes from two parents - correct answer Sexual reproduction cross between two individual who are heterozygous for one gene (Aa x Aa) - correct answer Monohybrid cross T/F most disorders are covered by single genes inherited in melanin fashion - correct answer False
