In tomato plants, the production of red fruit color is under the control of an allele RR. Yellow tomatoes are rrrr. The dominant
phenotype for fruit shape is under the control of an allele TT, which produces two lobes. Multilobed fruit, the recessive phenotype, have the genotype tttt. Two different crosses are made between parental plants of unknown genotype and phenotype. Use the progeny phenotype ratios to determine the genotypes and phenotypes of each parent. Cross 1 progency 3/8 two-lobed, red
3/8 two-lobed, yellow
1/8 multilobed, yellow
Cross 2 progency 1/4 two-lobed , red
1/4 two-lobed, yellow
1/4 multirobed red
1/4 multilobed yellow
Store and transmit genetic information: nucleic acid Are primarily used to store energy: lipids Help regulate cell processes: proteins Are used for main source of energy: carbohydrates
