Illinois Junior Academy of Science - Yearbook (Urbana, IL)

Page 69 text:

25 33 FEQQQEE 55 2391 gg 57353 . ff' ' D3 'Ei-42552.-55 2Ei115'9w a2'Zs5E:f'i5555Zl4' FY' . 5.855 FEE--asia' - m we A YJDQC mF'V1 OQODIW SQA g2'3g:gH c o w H 2.23 Q-3' 53 '333 as U' e ---Q? m 'U QZIHG :S ev 9 55 3 nge m 5 8 55:3 Eg Sa.-:xiii VI omg EV Huggg He-1-'Q m....On E' SOD' 55 5-3545: mg sm 5'-42.2225 :wi me HE. 2012- 333 E5 Sigman QQ' we mmmow .YQ 55 Q --HW 53W gg QBESSQ H 3 Q 928523 ?nO 3 ' fffggws me- 4 '-4 gg! '-'- 5: v-sqm ,DQ g,n-5559-..... fn n ,mx mann- N swf' E? 2 oE3 gg .32 ggqgif o Q 80 OE QQQEHO 0? 59-' go '9,,-l'5' N 1+ :S Q '1 : rc vo 'cg mm Q-3i9s'i'mN , P Li ' l 2 . 3 '5 iiyi 'E i.,ff - ., . 1, . fig ww Z L1 .:1' '13'+.f. ,f,,g7i,,'j 7 71' ,ff44!4'.j't,14i.m ii W .W-if 'vi I 5 1-'mai z 5 3 i , L 1 , if 1,1 F 5. slim, 1 '11 g i ' . L '1. V 4-iff. Mfg' --i3e,I E.Q'vC 1 Aa ...a -s-I asa,4..--sas.,.g'Pl.,.,i-j--qs-at-L-ef-Lx' 2 . I 4- , , , ,. .X h- . I -15. A 5-9.:'fif ,-E95 E .' V ' . I ' l 9 A .v Mg 1 , ,.., , . . . .. -gs,::ii,fqi1:gg s .. 'Lf' M. - . 3 2 ,F-Aw :Q -L 4,4 rx i V 1 V ,gg U ' ' A ' 5' : I ' g '7'vH5h.H I 2 ' . ff l L I in :VI ' A ' , i'iu 1 3 mfg., al cw . .fy 1 mg , A: V ...........,--,.,................. up www QPU' lawn? ' l ' . L - L . . .vhiez ' HH 4.9 ll wth lllll. I-I l I.: l :li Hill xl.Ill9l,lI IIININWCF- Recombination in the RNA Bacteriophage MS-2 ALAN L. welss U ny Niles Township High School West Skokie, Illinois -Qq Ein ff MS-2 is a bacterial virus whose genetic materials are composed exclusively of RNA. As the life cycle of this phage differs considerably from those of DNA bacteriophages, the method of recombination among RNA genomes may be quite unusual. The use of MS-2 strains having various host range and rapid lysis mutations made the following of recombina- tions possible. Single burst matings, involving the infection of one bacterium by two genetically dissimiliar phages, resulted in the formation of complementary recombinants in appar- ently unrelated ratios. The copy-choice model was found to be applicable to these results, but further experimentation is necessary for the verification of this hypothesis. Analysis of average recombination frequencies, when interpreted under the assumption that the probability for recombination is di- rectly related to the distance between the two recombining loci, revealed that MS-2 RNA assumes a circular configura- tion during recombination. Bacteria All Around Us DONALD SCHLAX up Our Lady of Victory Sponsor: Mr. Wm. F. Schlax nsr Asif-v1l0l ' lx 1 - f - ' n.xc'ri:nm ,,. lu, imc, LH H .U F is All Alltlliyn . 3 :I Q lrlfll-IS vu I nm!! ' nfyffsxy hhAh I .11- I did this project to show there is bacteria everywhere. First of all I built and painted my incubator. Then I found where I could get some agar for my bacteria. I col- lected bacteria from everywhere. I then made my poster. I found out that every sample I took grew bacteria. h My conclusion is that bacteria can be taken from every- w ere.

Page 71 text:

MATHEMATICS