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Dihybrid Cross Amoeba Sisters Video Recap

Amoeba Sisters Video Recap worksheet on Dihybrid Crosses using Mendelian genetics. Focuses on pea plant traits (color and texture), Punnett square practice, genotype/phenotype identification, and understanding inheritance probabilities.

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□(HYBRID CROSSES (MENDELtAN)A M O E B A SISTERS: VFDEO RECAPAmoeba Sisters Video Recap:Dihybrid Crosses (Mendelian Inheritance]Vocabulary practice! You probably have had enough of cats with our video. On t o peas! In pea plants, yellow peas (coded forby a dominant allele Yj are dominant to green peas (requiring two recessive alleles y). Round peas [coded for by a dominantallele R) are dominant t o wrinkly peas (requiring two recessive r alleles).These are actual pea plant traits, by t h e way!For the following, p ease write in the genotype or phenotype. Some are filled i n foryou.GtnotypaPhinotyp*YYRRYellow, roundI'.nr.r. ____Green, wrinkhrdYyRr2,yirllow round____________yyRR3_ green roundyyRr4jr« "rou O5-YYrr______ o rTverYellow, wrinkledb.OrGreen, round7. Analieie is a form o f a gene. In the cross HhSs x hhss, h o w manyalleles does a kitten inherit from the mother?8. How many a leles does a kitten inherit from thefather?9. Gametewhich are sex cells, carry the alleles. Why must a gamete carry oneallele (represented by a letter) fromeachgene? Meaning, why can t a gamete carry an "hh" instead o f a r "hs ' or ar "Hh‘ instead of a "US?1EiKti « I Un r r d iitf i l i ro follvtatl o rfijctit r a i tI h r cqg w i l l« r r yMW ropy ofcJCh4rdI hrsprri* w i l lfl'.VOcarry <wtone copy each t oiratea cwoletes e tf o rferlizatUHiThe Dihybrid Problem SolveRead the beginning part about pea plants again Bernard really likes growing peas i n his garden, but the peas he likes aregreen. He also likes tnem t o have a wrinkled texture, because he thinks they look much more interesting that way. Pleasework out a YyRr x YyRr (heterozygous cross) on the back o f this sheet or on another paperwhile showing all work-10. After showing your work to use as support, what is the chance that Bernard will have pea plant offspring that match thephenotype be is looking for Igreen, wrinkled)?11. What is the phenotype ratio o f this heterozygous cross?fyefloiy,round):(yellow, wrinkled):(green, roundJ.(green, wrinkled)12. If Bernard did not receive any pea plants that were green and wrinkled i n actuality, would you know for sure that t h eparent genotypes were incorrect? Why or why not?r : . ’flljn'.Mouldn l / j - 6 chsnr ro fb r j nw r i n k l r d .; 1| ij u j t4 p r a b i t h i l trfflff4ctipl*?t outarm 1/lti siood ers( 5. Amoeba Sisters LLC\© AILreserved

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Biology

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