Sample Test Questions

Sample Test Questions - SAMPLE TEST QUESTIONS Lectures 1-4...

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SAMPLE TEST QUESTIONS: Lectures 1-4 1) The cell cycle consists of a) M phase b) G1 c) S phase d) interphase e) all of the above 2) Cyclin D plus cdk4 are necessary for what cell cycle phase transition? a) G1 to S b) S to G2 c) G2 to M d) M to G1 e) S to G1 3) A cell in G2 has exactly two: a) nuclei b) identical copies of its DNA c) S - phases d) mitotic spindles e) nucleosomes 4) Chromatin consists of: a) DNA b) histones c) cyclin D d) b and c e) a and b 5) What happens to the cell cycle when you treat cells with just caffeine? a. nothing b. S-phase is longer c. The DNA fails to replicate d. Cells arrest at S-phase e. Cells arrest at mitosis 6) A stable kinetochore microtubule is attached to: a. centrosome b. kinetochore
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c. histones d. a and b e. b and c 7) Crossing over occurs during: a) S phase I b) Prophase I c) Metaphase I d) a and b e) b and c 8) Synapsis occurs between: a) identical chromatids b) centrosomes c) homologs d) b and c e) a and b 9) Anaphase I of Meiosis I separates: a) identical (sister) chromatids b) homologs c) centrosomes d) a and b e) b and c 10) A triploid cannot complete: a) M-phase b) Meiosis I c) Meiosis II d) DNA synthesis e) all of the above 11) A true breeding 5' tall bezenia plant is crossed to a true breeding 3' tall bezenia. The F1 progeny are all 5' tall. In bezenias, height is: a) a discretely varying trait b) a continuously varying trait c) incompletely dominant d) a and c e) b and c
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12) In geranias, the purple flower trait is dominant and the white flower trait is recessive. You want to determine the genotype of a purple flower. You will do a: a) karyotype b) a test cross c) a dihybrid cross d) a southern cross e) none of the above 13) In gryphons, coat color is determined by a single gene with a completely dominant black (B) allele and a recessive (b) white allele. The cross-eyed character is determined by a single gene with a completely dominant normal-eyed allele (C) and a recessive cross-eyed allele (c). You cross two gryphons of unknown parentage: a black normal- eyed with a white normal-eyed. The F1 progeny are 3/4 black normal-eyed and 1/4 black cross-eyed. The genotypes of the parents are: a) BBCc x bbCc b) BbCc x bbCc c) BBCC x bbCC d) a or b e) b or c 14) In gryphons, coat color is determined by a single gene with a completely dominant black (B) allele and a recessive (b) white allele. A feral male gryphon of unknown phenotype sneaks into your gryphon pen and mates with your prized black female gryphon. She produces 4 black F1 progeny and 2 white F1 progeny. You can confidently conclude that the genotype of the unknown male is: a) BB b) Bb c) bb d) a or b e) b or c 15) You cross a true-breeding snap-poppy with blue flowers with a true-breeding snap- poppy with white flowers. The F1 progeny all have purple flowers. When you self the F1 progeny, to you get 1/4 white progeny, 3/16 blue progeny 3/16 red progeny and 3/8 purple progeny. You can conclude that in snap-poppies: a. white is epistatic to pigmented b. pigmented is epistatic to white c. color is multigenic d. a and c e. b and c
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16) Height in merigonias is determined by 3 genes that act additively. Each has two
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Sample Test Questions - SAMPLE TEST QUESTIONS Lectures 1-4...

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