04 sample_exam1_multiple_choic

04 sample_exam1_multiple_choic - _Key_ Last name Circle TA...

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______Key________ _________________ _________________ Last name First name Student number Circle TA name Paula Wade John Andy Stacey 1 st Midterm Exam LS 4 Lecture 2 Jan 28, 2002 in multiple choice format 1. A plant with purple flowers and spiny leaves was self crossed and gave these results: 94 purple spiny, 28 purple smooth, 32 white spiny, 11 white smooth What is the genotype of the plant? Define symbols for dominant and recessive tratis. i) P (purple) p (white) S (spiny) s (smooth) ii) P (white) p (purple) S (smooth) s (spiny) iii) P (purple) p (spiny) S (white) s (smooth) iv) P (white) p (smooth) S (purple) s (spiny) v) P (purple) p (spiny) S (smooth) s (white) A cross of purple smooth x white spiny parents results in 100 white spiny, 100 white smooth, 100 purple spiny and 100 purple smooth progeny. What are the parents’ genotypes? i) Pp Ss x Pp ss ii) Pp Ss x Pp Ss iii) Pp Ss x ppss iv) Pp Ss x pp Ss v) Pp ss x pp Ss 2. A cross of purple smooth x white spiny plants from problem 1 gives only purple spiny and purple smooth progeny. You plan to cross one of the purple spiny x one of the purple smooth plants from these progeny. Diagram the Punnett square for this cross. What numbers of each progeny phenotype do you expect in 160 progeny obtained from this cross. i) purple spiny 40, purple smooth 40, white spiny 40, white smooth 40 ii) purple spiny 90, purple smooth 30, white spiny 30, white smooth 10 iii) purple spiny 60, purple smooth 60, white spiny 20, white smooth 20 iv) purple spiny 20, purple smooth 20, white spiny 60, white smooth 60 v) purple spiny 60, purple smooth 20, white spiny 60, white smooth 20
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3. By following the amount of DNA in a cell, you can determine the kind and stage of the division process at different times for that cell. Below is the record of one cell. i) mitosis, 1 = interphase, 2 = meta phase, 3 = anaphase ii) mitosis, 1 = metaphase, 2 = anaphase, 3 = telophase iii) meiosis, 1= interphase, 2 = metaphase, 3 = anaphase iv) meiosis, 1 = metaphase, 2 = anaphase, 3 = telophase v) meiosis, 1 = interphase, 2 = anaphase I, 3 = anaphase II What is the ploidy number of the progeny cell at time point 4? i) haploid ii) diploid iii) 4C iv) 2C v) 2n 4. In an insect species all individuals get one large metacentric chromosome and one small acrocentric chromosome from each parent. How many chromosomes will you see in a somatic cell of this species? i) 1 ii) 2 iii) 4 iv) 8 v) 16 Draw a picture of the chromosomes in mitotic metaphase . Suppose the genotype of this cell is dihybrid for the dark body trait (D/d) on the large chromosome and the light eye trait (L/l) on the small chromosome. Completely label the chromosome figures in your picture with the genotypes for these traits.
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5. You chose parental white eye females with normal round eyes to cross with small eye males with normal red eye color. Their F1 progeny were small normal color eye daughters and sons with small white eyes. Crosses of F1 brothers x sisters gave these results in the F2: 600 with small eye normal color (both males and females),
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04 sample_exam1_multiple_choic - _Key_ Last name Circle TA...

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