Problem_Set_2

Problem_Set_2 - Biology 202 Problem Set 2 1/20/12 This...

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Biology 202 Problem Set 2 1/20/12 This problem set covers material from January 18 th through January 25 th From Griffiths et al. 9 th edition, (# in parentheses = same question found in the10 th edition): Chapter 2, problems 4(18), 8(22), 20(34), 22(36), 24(38), 28(42), 29(43), 30(44), 38(52), 39(53), 46(60), 47(61), 48(62),52(66), 53(67), 64(78) Chapter 3, problems 18(29), 20(31), 35(46), 36(47) Chapter 6, problems 7(18), 8(19), 9(20), 12(23), 13(24), 14(25), 16(27), 23(34) Hand in answers to the following questions, due at 4:00 pm on January 27 th 1. The rarely seen Shmoo species has three variable features due to three genes, each with a dominant and recessive allele: Blue hair (B), green hair (b); Long teeth (T), short teeth (t), Wrinkled nose (W), smooth nose (w). Create a Punnett square for the Trihybrid Cross: B/b;T/t;W/w X B/b;T/t;W/w. List all the combinations of phenotypes that result with their corresponding ratios. 2. Two Shmoos, each heterozygous for hair color, together have seven Shmoo offspring. What is the probability that only three of the offspring will have green hair? What is the probability that at least three, but not all, will have green hair? 3. You’re working on golden rice, a plant that promises to alleviate nutritional deficiencies in some developing countries. You cross two true breeding plants. One parent has fat grains, wavy leaves, red flowers and is short in stature, while the other parent expresses the contrasting phenotypes of thin grains, straight leaves, white flowers and is tall in stature. The four pairs of contrasting traits are controlled by four genes, each located on a separate chromosome. In the F 1 , only fat grains, straight leaves, red flowers, and tall stature were expressed. In the F
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Problem_Set_2 - Biology 202 Problem Set 2 1/20/12 This...

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