Genetics Practice Problems Key: Solving Genotype and Phenotype Problems, Study notes of Genetics

Download Genetics Practice Problems Key: Solving Genotype and Phenotype Problems and more Study notes Genetics in PDF only on Docsity!   1   Simple Genetics Practice Problems KEY This worksheet will take about 20 minutes for most students, 1. For each genotype, indicate whether it is heterozygous (HE) or homozygous (HO) AA _HO__ Bb _HE__ Cc _HE___ Dd _HE___ Ee _HE___ ff _HO___ GG _HO__ HH _HO__ Ii __HE__ Jj __HE__ kk _HO___ Ll _HE___ Mm _HE___ nn _HO__ OO _HO__ Pp _HE___ 2. For each of the genotypes below, determine the phenotype. Purple flowers are dominant to white flowers PP ______purple Pp ______purple pp _____white Brown eyes are dominant to blue eyes BB _______brown Bb _______brown bb _______blue   2   Round seeds are dominant to wrinkled RR______round__ Rr______round___ rr_______wrinkled__ Bobtails are recessive (long tails dominant) TT ________long__ Tt _________long__ tt _________bobtails__ 3. For each phenotype, list the genotypes. (Remember to use the letter of the dominant trait) Straight hair is dominant to curly. _____SS______ straight _____Ss_____ straight _____ss_____ curly Pointed heads are dominant to round heads. ____PP____ pointed ____Pp______ pointed ____pp_______ round 4. Set up the square for each of the crosses listed below. The trait being studied is round seeds (dominant) and wrinkled seeds (recessive) Rr x rr What percentage of the offspring will be round? ___1/2 or 50%___ Rr x Rr What percentage of the offspring will be round? ___75% or 3/4_ RR x Rr What percentage of the offspring will be round? __all, 100%_____